名词
中文翻译：初生幼虫
同义词：
['infant larva', 'larval stage']
例句：
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1.The first-instar larvae are the most vulnerable to predators.
初生幼虫最容易成为捕食者的目标。
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2.During the first-instar stage, the larvae feed on plant material.
在初生阶段，幼虫以植物材料为食。
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3. Researchers have identified several genes that regulate the first-instar development of the caterpillar.
研究人员已经识别出几个基因，它们调控着蚕蛾的初生发育。