名词
中文翻译：Unknown
同义词：
['twin chrysalis', 'twin pupa', 'twin cocoon']
例句：
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1.The caterpillars emerge from their twin cocoons to become butterflies.
毛毛虫从它们的孪生茧中孵化出来，变成蝴蝶。
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2. During the mating season, male and female dragonflies form a twin cocoon to protect their eggs.
在交配季节，雄性和雌性蜻蜓形成孪生茧来保护它们的卵。
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3. The scientists found that the twin cocoons of certain species of beetles could be used as anatural insecticide.
科学家们发现某些甲虫的孪生茧可以作为一种天然杀虫剂。