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In scyphozoan jellyfish, the free-swimming medusa form is the dominant stage, with the sessile polyp form found only during larval development.

自由游泳水母见于各海洋,包括常见沿海岸线漂流盘形动物(如甲壳动物)。

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The results of biochemical analysis indicated that the difference of the activity of carboxylesterase and esterase isozymes in the larval midguts were the main mechanism of this selective toxicity.

生化果进一步指出,昆虫中肠酸酯活性及酯差异是这种选择麻醉作用重要机制。

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Although early instar larvae were present in the host larval hemocoel, only one parasitoid survived to come out of host larva for pupation, killing the larva in the process.

当多只早龄幼虫同时出现于寄主幼虫血腔中时,只有一只拟寄生者能成地脱离寄主发育成蛹,过程中会杀死其他寄生幼虫。

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科学60秒-科学美国人 2019年9月合集

They then recorded egg survival rates and larval development.

随后,他们记录了鱼卵的存活率和鱼苗的发育情况。

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PBS趣味科普

Egg first, and then a larval stage where they're feeding on the foliage.

首先是卵,然后是幼阶段,它们以树叶为食。

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少儿畅学课堂

Each egg will then develop into a planula: a swimming larval form.

然后,每颗受精卵会发育成幼体,即是游动的幼

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PBS趣味科普

The deeply strange ways insects transform their squishy little larval bodies into their final forms.

将柔软的幼身体转化为最终形态的方式非常奇怪。

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VOA慢英语_科技

Many kinds of jellyfish have some ability to reverse aging and go back to a larval form.

许多种类的水母都有一定的逆转衰老,回到幼状态的能力。

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Reel知识卷轴

Within the flies, for many of the species, we refer to this larval stage as the maggot.

对苍蝇以及许多物种说,我们把这个幼阶段称为蛆。

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王国第二季 (原声版)

Certain American species even manage to synchronize their larval stage so they all emerge at the same time.

有些种类的美国蝉甚至能让它们的幼发育同步,然后全部一起蜕变。

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VOA Standard 2013年9月合集

However, it says “more good quality evidence is needed to support this view.”Tusting explained how larval source management works.

不过,这种观点还需要更多可靠的说明。”Tusting解释了幼源管理运作的办法。

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VOA Standard 2013年9月合集

There are several ways of using larval source management, which could be especially effective in urban areas.

有几种使用幼源管理的办法,这些办法在城市地区特别有效。

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VOA慢英语_科技

It is the only known species of jellyfish able to repeatedly change back into a larval stage after sexual reproduction.

灯塔水母是已知唯一一种在有性繁殖后能够反复回到幼阶段的水母。

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查莉成长日记 第1季

Due to the hive removal, pest sterilization or larval dispersion.

分散等业务所产生的财产损失不负任何责任。

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Life Noggin

Even if they can successfully make eggs, the oil can negatively impact egg and larval survival.

即使它们能够成功产卵,油也会对卵和幼的存活产生负面影响。

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VOA Special 2013年9月合集

She says the new research is important because a number of African and other countries are using larval source management.

她说这项新研究很重要, 因为许多非洲和其他国家正在使用幼源管理。

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VOA Special 2013年9月合集

Another method targets mosquito larvae, the young, not yet fully developed mosquito. This method is called larval source management, or LSM.

另一种方法针对蚊子幼, 即尚未完全发育的幼蚊。 这种方法称为幼源管理或 LSM。

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VOA Standard 2013年9月合集

So, larval source management is a method of controlling malaria that works by targeting those immature mosquito stages that are found in standing water.”

因此,幼源管理是通过杀灭静水中不成熟的幼控制疟疾的办法。”

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科学洞察

Dr. Thomas Platts-Mills, went so far to use himself in an unofficial experiment, taking a hike through a nest of larval ticks.

托马斯·普拉茨-米尔斯 (Thomas Platts-Mills) 博士竟然在一项非官方实验中利用自己的力量,在蜱巢穴中徒步旅行。

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经济学人 Science and technology

The first step involved slicing the tiny larval brain into thousands of layers for scanning with an electron microscope (the EM of the name).

第一步涉及将微小的幼大脑切成数千层,以便用电子显微镜(名称的 EM)进行扫描。

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科学洞察双语版

One of the leading researchers, Dr. Thomas Platts-Mills, went so far to use himself in an unofficial experiment, taking a hike through a nest of larval ticks.

其中一个带头的研究者,叫托马斯·普拉茨米尔,他的研究之深入,竟拿他自己做非官方的实验,他徒步走过了蜱的窝。

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经济学人(汇总)

They also mean, because larvae, too, receive royal jelly for the first few days after they hatch, that the nurses are inoculating their larval charges as well.

这也意味着,因为幼在孵化后的头几天也会接受蜂王浆,所以看护蜂也在给它们的幼注射疫苗。

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VOA Standard 2013年9月合集

Her colleague and co-author, Durham University Professor Steve Lindsay, called the review a “landmark publication demonstrating that in many places larval source management should be used as a supplementary weapon against malaria.”

她的同事兼合著者、英国杜伦大学的史蒂夫·林赛教授称这次评价是“里程碑式的出版物,表明在许多地区幼源管理应该被视为抗击疟疾的补充办法。”

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