查询词典 weevil

It has been frequently assumed, but not proved, that the majority of the migrants in what has come to be called the Great Migration came from rural areas and were motivated by two concurrent factors: the collapse of the cotton industry following the boll weevil boll weevil: n.

通常认为，但没有证实，这一被称作大迁徙运动中的多数的移民者来自农村，并且他们被两种共同存在的因素所驱动－开始于1898年的由棉铃虫害导致的棉花工业的垮掉和1914年一战爆发引起的欧洲移民的终止导致的北方对劳力的需求增多。

In the 2-year field experiments, host plant preference and dispersal of the rice water weevil adults of the 1st generation emerged from the 1st cropping season rice were measured on newly transplanted plants of different species and/or growth stage. The weevil preferred significantly to barnyardgrass over Leersia herxandr and Cyperus difformis L with rice at the least, while the age of the plant did not affect such preference. But mean size of feeding scar in on younger plants were larger than in older plants.

在田间自由选择条件下，一代稻水象甲成虫对稗草的选择性显著高于对水稻的选择；稻水象甲对不同生育期的稗草、水稻的选择没有显著影响；对李氏禾和莎草的选择高于水稻，低于稗草；较幼嫩的植物上的取食斑总长度、取食斑平均长度比较老的植物的要长。

Rapeseed stem weevil (Ceuthorrhynchus asper Roel.) is the main rapeseed pest in Northwestern China. It occurs one generation each year with adult overwintering.

油菜茎象甲是中国西北地区油菜的主要害虫，一年发生一代，以成虫越冬。

Gossypol, which is produced by gland cells in the leaves of cotton , is an attractant to the boll weevil

棉叶腺胞分泌的棉酚对棉铃象鼻虫是一种引诱剂。

Be cautious about the use of benzene hexachloride as an insecticide as a dust or spray against pea and bean weevil because it is very

六六六作为杀虫剂喷洒于豌豆，青豆类，毒杀象鼻虫，要慎用，因为它极易致癌。

In the long run, they saw that the boll weevil had, in fact, done them a favor by destroying their crops.

从长远来看，他们发现棉铃象甲虫虽破坏了农作物，但实际上反倒帮了他们的忙。

Before 1995, it was controlled with insecticides targeting other insect pests such as tobacco budworm and boll weevil.

你把技术费和种子处理费用加上，就会明白为什么我们的棉花种植面积正在减少。

Farm demonstration work in the South helped to fight the cotton boll weevil.

南部农场示范工作大大帮助了对棉花象鼻虫的防治。

Surprisingly, it was erected because of the devastation5 the boll weevil caused to the cotton crops of the surrounding area!

令人惊讶的是，给棉铃竖立雕像却是源于它对周围地区棉花作物的破坏。

Well, had it not been for the boll weevil, the local economy would have continued its unhealthy dependence on its one crop, one-product economy.

因为如果不是棉铃象甲虫，该地区的经济作物恐怕还会持续着其不健康的对单一作物、单一产品经济的依赖。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。