名词
中文翻译：蛹期
同义词：
['larval stage', 'nymphstage']
例句：
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1. The caterpillars are the first stage ofthe butterfly's life cycle.
毛毛虫是蝴蝶生命周期的第一个阶段。
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2. During thenymphal instar, the caterpillar grows rapidly.
在蛹期，毛毛虫生长迅速。
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3. The nymphalinstar is a critical period for thecaterpillar to develop its wings.
蛹期对毛毛虫发育翅膀至关重要。