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Is it that the glucosinolates which give mustard its flavor were evolved by the cabbage family as a chemical defense against caterpillars? Yeah.
黄芥末主要味道来源的芥子油甙，由白菜花科植物为了抵御毛毛虫而进化形成的吗？是的。
《The Big Bang Theory Season 9》《生活大爆炸 第九季》
双语例句
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Caterpillars change into butterflies.
毛虫变成蝴蝶。
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Caterpillars eat the young leaves of this plant.
毛毛虫吃这种植物的嫩叶。
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After a few days the caterpillars stopped feeding.
几天后毛虫停止了进食。
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The caterpillars feed on a wide range of trees, shrubs and plants.
毛虫以各种树木、灌木丛和植物为食。
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The caterpillars grow and they're big and fat.
毛毛虫逐渐长大，他们又大又胖。