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The melanous rate of adults was 2.75%.

的黑化个体占2.75%。

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

圆斑弯叶毛瓢地松粉蚧有较强的捕食作用,通过散放瓢和幼,增加林间瓢的数量,能较好地地松粉蚧的增长。

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

图源类作物的银叶粉虱在六种杂草的前期累积死亡率.

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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)

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

一周后,黄蜂现,抛下它那倒霉帮手的尸体远走高飞。

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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.

繁殖性幼发育为兵会死于宿主体内。

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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,若需要经过4周才能变成

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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

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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.

所有的昆都会“产卵”,但这些卵可不会孵

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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, 这层干燥的硬壳就会破开, 苍蝇的“”。

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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.

一整季里他们系统地收集所有甚至把毛毛都捉起

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

雌性蝇会飞,把蝇蛆喷到驯鹿的鼻孔里。

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雅思听力最新机试真题

While adults may occasionally feed on nectar or pollen, they feed insects, flies and even caterpillars to their young.

虽然偶尔会吸食花蜜或花粉,但它们主要捕食昆、苍蝇,甚至毛毛喂养幼

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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里生活。

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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小时后就迎着阳光现了。

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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且都不用父母照顾。

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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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VOA Special 2018年5月合集

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

放在木箱里,一个叠一个放在地上。

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SciShow 合集

Those offspring usually can’t develop properly and die before they become adults.

那些后代通常无法正常发育,并在成为之前死亡。

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When it's time to turn into an adult, they bury themselves deep underground.

当到了变成的时候,它们会把自己深埋在地下。

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After three weeks, they climb out as adult beetles.

三周后,它们变成

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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

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Ologies with Alie Ward

The adults don't light up, even though the larvae do.

不会发光,尽管幼会发光。

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