开始发育

By the nucellar cells PCD, which were encircling the female gametophyte, the pollen chamber connected with the archegonium chamber for the fertilization in coming.

在胚珠中的雌配子体发育完成、受精过程开始之前，贮粉室与颈卵器室贯通。这一过程是通过雌配子体周围的珠心细胞发生程序性死亡完成的。

The flowering stem can be basal, that is produced from the base of the tuber, like in Cymbidium, apical, meaning it grows from the apex of the main stem, like in Cattleya, or axillary, from the leaf axil.

开花的茎可以是基生的，是从块茎的基部发育，就像大花蕙兰；顶生的，就是指它从主茎的顶端开始生长，就像卡特兰；或者是腋生的，从叶腋处生长。

My baby milk or water from the beginning, is to use a bottle, one-year-old when he tried to used glass, but he only used to play, do not have to milk or water, then did not give him a cup of water, I recently heard that the regular use of baby bottle tooth development impact, I was very worried that it is really true?

我家宝宝从开始喝奶或水，都是用奶瓶，一岁的时候试着给他用过水杯，但是他只用来玩，根本不用来喝奶或水，后来就没再给他用水杯，最近我听别人说经常用奶瓶对宝宝的牙齿发育有影响，我心里非常担心，真的是这样吗？

The nerve need not be present throughout the entire period of regeneration; once the limb has begun to grow and tissues are sufficiently differentiated, the nerve may be removed without impariment of the morphegenetic potency acquired by these tissues during their earliest stage of formation. Singer (1974) has shown that it does not matter for regeneration what type of nerve, whether motor, sensory, or autonomic, is present in the blastema.

但是再生的肋骨市是「不完全发育」，神经不会在整个再生过程中呈现出来；一旦，肋骨开始生长，而且组织得到足够的养分，神经就可以从器官器官再生的部位移除，力量，是细胞在早期形成的时间得到的Singer，则证明了：任何细胞组织，对再生来说，是不相关的，不管是运动、感觉、自动的，都在胚芽中呈现。

Ontogenesis begins from the fertilized embryo. After the cells proliferation during the embryo cleavage, it enters the stage of blastoderm differentiation、 tissue and organ formation.

个体发育从受精卵开始，经过卵裂阶段的细胞增殖后，进入到胚层分化、组织和器官形成阶段。

These transitional stages are the blastogenesis, the first stage from the moment of conception to the implantation or nidation after around 14 days. Secondly, the stage following on from nidation until the moment when the foetus has a viable independent existence, and finally the stage from viable independent existence until the actual birth.

这些过渡阶段是芽基发育，即从受孕到植入或着床的时刻起大约14天的第一阶段；第二阶段从着床开始，到胎儿已经成为可存活的独立的存在；第三阶段从可存活的独立存在到实际出生。

The fourth milestone was in the embryonic stage of development . Vertebrates and echinoderms began to develop differentiated mouth structures from secondary openings off the blastopore ( an initial opening in the embryonic cavity ).

第四个重要事件出现动物的胚胎发育期，脊椎动物和棘皮动物开始在胚孔（即动物早期胚胎原肠的开口）相对的一端另行开口，并最终发育为成体的口。

Tetraploid embryos could be produced by electrofusion at the stage of two-cell embryos, which could develop to blastocysts followed by fusion of cytoplasm and nucleus and cleavage in vitro. During the fusion of cytoplasm, the DNA methylation levels of the fused embryos are as high as these of two-cell diploid embryos in vivo Then the embryos are rapidly demethylated when the nucleus begin to fuse, resulting in the lowest DNA methylation levels when the nucleus are fused completely. After that, the DNA methylation levels of the fused embryos are gradually increased until the morula stage. However, whereas an asymmetric distribution of DNA methylation is established in vivo-derived blastocysts with a higher methylation level in the inner cell mass than that in the trophectoderm, we can not detect the asymmetric distribution in most in vitro-derived tetraploid blastocysts.

结果表明：利用电融合方法制备的小鼠四倍体胚胎在体外培养体系中经历细胞质融合、细胞核融合及细胞继续分裂发育直到囊胚期的过程，在细胞质融合的时候胚胎卵裂球同体内体外培养二倍体胚胎一样，呈现高度甲基化状态；在细胞核开始融合的时候，甲基化水平急速下降，在细胞核完全融合的时候甲基化水平达到最低点；随着胚胎继续分裂，胚胎甲基化水平逐渐增加，在桑葚胚期甲基化水平最高；但是囊胚期四倍体胚胎内细胞团同滋养层细胞甲基化荧光信号没有差别，这与体内体外培养二倍体囊胚内细胞团细胞甲基化荧光强度高于滋养层细胞甲基化荧光强度不同。

Tetraploid embryos could be produced by electrofusion at the stage of two-cell embryos, which could develop to blastocysts followed by fusion of cyto-plasm and nucleus and cleavage in vitro. During the fusion of cytoplasm, the DNA methylation levels of the fused embryos are as high as these of two-cell diploid embryos in vivo Then the embryos are rapidly demethylated when the nucleus begin to fuse, resulting in the lowest DNA methylation levels when the nucleus are fused completely. After that, the DNA methy-lation levels of the fused embryos are gradually increased until the morula stage. However, whereas an asymmetric distribu-tion of DNA methylation is established in vivo-derived blastocysts with a higher methylation level in the inner cell mass than that in the trophectoderm, we can not detect the asymmetric distribution in most in vitro-derived tetraploid blastocysts.

结果表明：利用电融合方法制备的小鼠四倍体胚胎在体外培养体系中经历细胞质融合、细胞核融合及细胞继续分裂发育直到囊胚期的过程，在细胞质融合的时候胚胎卵裂球同体内体外培养二倍体胚胎一样，呈现高度甲基化状态；在细胞核开始融合的时候，甲基化水平急速下降，在细胞核完全融合的时候甲基化水平达到最低点；随着胚胎继续分裂，胚胎甲基化水平逐渐增加，在桑葚胚期甲基化水平最高；但是囊胚期四倍体胚胎内细胞团同滋养层细胞甲基化荧光信号没有差别，这与体内体外培养二倍体囊胚内细胞团细胞甲基化荧光强度高于滋养层细胞甲基化荧光强度不同。

In the northern part of the Okinawa Trough,at about 7.5-7.0kaBP of the early Holocene, this studied region was controlled by the continental shelf water, and at about 7.0aBP Kuroshio water combined with continental shelf water intensively, then the region was controlled by the intensified Kuroshio water with upwellings during 7.0-6.0kaBP; from 6.0-2.0ka BP the upwellings developed stably and the thermocline gradually declined: from 6.0-5.0 kaBP the impact of the upwellings mainly focused on the thermocline and much less on the sea surface, from 5.0-4.0kaBP the SST decreased because the sea surface was influenced by the cool water brought by the intensified upwellings; from 2.0-1.2kaBP, the upwelling declined and the SST increased consequently; since 1.2 kaBP the upwelling increased and the thermocline declined obviously.

冲绳海槽北部、九州西南海区，全新世7.5-7.0ka BP陆源物质影响明显， 7.0kaBP前后黑潮侵入并与陆架水强烈混合，7.0-6.0ka BP期间黑潮影响逐渐控制了该区，上升流开始发生，温跃层开始变浅；约在6.0-2.0ka BP之间上升流持续稳定发育，温跃层深度逐渐下降：6.0-5.0ka BP上升流影响作用于温跃层但对表层影响较小，5.0-4.0ka BP海水表层温度受上升流冷水影响降低；而约2.0-1.2ka BP，上升流减弱，海水表层温度回升；近1200年来上升流加强、温跃层深度减小的趋势更加显著。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。