使必需

Gill movement is a necessary condition of the gill breathing, it makes the water flow along a certain way, gill septum and gill cover is being opened, as if pumping the role of the water from the mouth out.

鳃的运动是鳃呼吸的必需条件，它使水沿着一定途径流动，鳃隔和鳃盖的启开，犹如泵的作用，将水从口腔中抽出。

The main structure of airplane tire is divided in to have no inner tire tire and has an inner tire tire, they become the help buffer airplane of an air mat layer lands process in of vibrate and runway of rough gravamen;On the ground, when they prop up aero weight, and land, they provide an essential brake to combine dint for making to move and making the airplane come to a stop.

一些关于飞机的中文翻译成英文，请求帮助飞机轮胎的主要构造分为无内胎轮胎和有内胎轮胎，它们形成一个空气垫层帮助缓冲飞机着陆过程中的震动和跑道的粗糙不平；在地面上，它们支撑着飞机的重量，并且着陆时，它们为制动和使飞机停下来而提供必需的刹车结合力。

Among them, the antioxidant compounds can effectively remove free radicals and esters peroxygen compounds inside the body, and interdict the powerful cancerogenic substance N-ammonium nilrite compounds. It can not only greatly enhance the body's immunity, but also with effective functions in moisturizing the skin, anti-fatigue and anti-aging; the bamboo fiber contains the amino acid necessary for human body, having distinctive health-care functions on the skin; the bamboo cellulose, bamboo honey and pectin have the effects of moisturizing the skin and fighting fatigue. They can increase the body's microcirculating blood, activate the histiocyte, enable the body to produce heating effects, effectively regulate the nervous system and unclog the meridian; the bamboo fiber has no free electric charge, antistatic and relieves itching.

其中，抗氧-化合物能有效清除体内的自由基和酯-过氧化合物，阻断强致癌物质N一亚-酸氨化合物，不仅能显著提高机体免-能力，而且具有滋润皮肤和抗疲劳、-抗衰老的生物功效；竹纤维含有多种-体必需的氨基酸，对皮肤具有独特的-健功能；竹纤维素、竹密、果胶具有-滋润皮肤和抗疲劳的功效，能增加人-的微循环血流，激活组织细胞，使人-产生温热效应，能有效调节神经系统-，疏通经络；竹纤维不带自由电荷，-静电，止瘙痒。

The carboxylicgroup was not the necessary group. The presence of the imidazole group wouldenhance the cleavage activity.

羧基不是必需基团，咪唑基的存在可以使丝组二肽具有较高的切割活性。

No longer is it necessary to have a different frame between the odd and even scans and these naturally progressive cameras are making the classic interlace artifact a thing of the past.

不再是它必需有一个不同的框架在那之间奇数的和甚至扫描和这些自然渐进的相机正在使第一流的间条成为人工品过去的一件事物。

These are necessary to strike terror to the lawbreaker, but the loving missionary can do more than this.

为使犯法者有所畏惧，刑罚固属必需，但有爱心的传道人所能成就的，还不止于此。

Like I told you, We have the resources and all that is neccessary to make your products gain entry and increase market penetration throughout Africa.

就像我曾经告诉您的，我们有使贵公司产品进入非洲所必需的资源。

Therefore, in mathematics teaching, we should proceed mathematics teaching needs, students from the life experience, practical life, to dig the life meaning of mathematical knowledge, to capture the phenomenon of life in mathematics, reflect the "math from life, resides in life, with in life ", so that students understand the math on your side, and thus realized that the charm of math, feel the fun of math and realize that everyone learn valuable math, everyone can get the necessary math, different people in mathematics get different levels of development.

因此，在数学教学中，我们应从数学教学的需求出发，让学生从生活经验、生活实际中去挖掘数学知识的生活内涵、捕捉生活中的数学现象，体现"数学源于生活、寓于生活、用于生活"，使学生体会到数学就在身边，从而领悟到数学的魅力、感受到数学的乐趣，实现"人人学有价值的数学，人人都能获得必需的数学，不同的人在数学上得到不同的发展"。

For a country, it must seek the rational speed of economic development, and make the economic development coordinates with the natural environment.

对于一个国家而言就必需寻求合理的经济发展速度，使经济发展与自然环境相协调。

Eric Noll, executive vice president of Nasdaq OMX, said:"Despite our best efforts, the increasingly competitive nature of the MTF space in Europe has meant that the growth of the business hasn't reached levels necessary for us to realise our stated objectives."

纳斯达克OMX执行副总裁埃里克·诺尔表示："尽管我们竭尽所能，但欧洲多边交易设施市场竞争日益激烈的特性意味着，该业务的增长没有达到使我们实现既定目标所必需的水平。"

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。。。。