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The melanous rate of adults was 2.75%.

的黑化个体占2.75%。

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Fig. 1. Cumulative preadult mortality rate of Bemisia argentifolii, originating from three groups of host plant, on six

图源类作物的银叶虱在六种杂草的前期累积死亡率.

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Therefore, the ladybird beetle could be considered as a potential biocontrol agent in controlling the pine mealybug in practice.

圆斑弯叶毛瓢对湿蚧有较强的捕食作用,过散放瓢加林间瓢的数量,能较好抑制湿蚧的长。

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Objective To study male insect s apical dilation of parameres and aedeagus of Leptoconops kerteszi complex and provide the scientific evidence for diagnosis among species.

目的研究古塞细蠓复合组雄性阳基侧突膨端体及阳茎中叶,为种间鉴别提供科学依据。

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The imago period is from the early April to end of May.The reproduction belongs to amphigenesis, but it may happen female parthenogenesis.A female average egg number is 3975.

期4月上旬至5月下旬,行两性生殖,存在孤雌生殖,雌平均产卵量为3975粒。

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王国第二季 (原声版)

They first turn green when they become adults.

它们变成时先变绿。

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王国第二季 (原声版)

The adult size depends on how much food is available.

体型大小取决于食物供给量。

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BBC纪录片《我们的地球》

Normally it takes four weeks for hoppers to become adults.

一般说来,若需要经过4周才能变成

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双语版 TED-Ed 演讲精选

The reproductive larvae morph into adults and the soldiers die within the host.

繁殖发育为,而卫兵会死于宿主体内。

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英国学生科学读本

All insects also lay eggs. But these eggs do not produce perfect insects.

所有的都会“产卵”,但卵可不会孵出

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自然历史博物馆

The female adult botfly will fly along and she squirts the larvae up the nostrils of the reindeer.

蝇会飞来,把蝇蛆喷到驯鹿的鼻孔

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王国第二季 (原声版)

After all, it takes only 15 days to produce an adult and you don't even need to parent.

毕竟它们只要十五天就能够长成而且都不用父母照顾。

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双语版 TED-Ed 演讲精选

After a week, an adult wasp appears, leaving its hapless helper's corpse behind.

一周后,黄蜂出现,抛下它那倒霉帮手的尸体远走高飞。

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王国第二季 (原声版)

48 hours later, the first adult will see the light of day.

48小时后就迎着阳光出现了。

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英国学生科学读本

But soon this dry case bursts open, and out comes a full-grown fly.

但是很快, 层干燥的硬壳就会破开, 爬出来苍蝇的“”。

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王国第二季 (原声版)

Many six-legged adults live here, too, without the benefit of the gills.

很多六足虽然没有鳃却也在那生活。

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王国第二季 (原声版)

For an entire season, they systematically collected all the adults and even picked up on the caterpillars.

一整季他们系统地收集所有甚至把毛毛都捉起来。

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PBS地球-动物趣闻

And those bigger larvae resulted in bigger adults.

更大的幼导致更大的

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TED-Ed(视频版)

If exposed to certain substances, axolotls will turn into adults.

如果暴露于某物质,蝾螈会变成

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VOA Special 2018年5月合集

Adults go in the ground in wooden boxes, placed on top of one another.

放在木箱,一个叠一个放在地上。

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2018年英语六级阅读真题

She may have observed the adult moth just as it emerged from its pupa.

她可能已经观察到刚从蛹中出来。

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TED-Ed(视频版)

The adults beat their translucent wings and take flight as a full-fledged locust swarm.

拍打着半透明的翅膀,像一只成熟的蝗群一样飞翔。

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Reel知识卷轴

You see, flies, as with most insects, undergo a complete metamorphosis from egg to adult via a larvae and a pupal stage.

苍蝇,和大多数一样,经历幼和蛹的阶段,完成从卵到的完全蜕变。

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PBS趣味科普

This lets adult and juvenile traits evolve independently from each other, since caterpillars and butterflies face totally different pressures for natural selection.

使得和幼状可以相互独立进化,因为毛和蝴蝶面临着完全不同的自然选择压力。

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PBS趣味科普

Some scientists think that so many insects are fabulously homometabolous because it means that adults and their young don't compete for food.

科学家认为,如此多的具有惊人的同源,因为意味着和幼不会争夺食物。

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