帝王蝶的幼虫以很多乳草属植物为食，包括一些包含高水平强心甾的类型。
Monarch caterpillars feed on any of dozens of species of milkweed plants, including some species that contain high levels of cardenolides.
帝王蝶的幼虫以很多乳草属植物为食，包括一些包含高水平强心甾的类型。
Monarch caterpillars feed on any of dozens of species of milkweed plants, including some species that contain high levels of cardenolides.
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