一些乳草属植物含有一种高浓度的化学物质，叫做强心苷(也叫卡烯内酯)，这种东西使得蝴蝶对那些食肉动物来说成了有毒食物。
Some milkweeds have a higher concentration of chemicals called cardenolides, which make the butterflies toxic to predators.
所述非烯属树脂可以是氯化的或非氯化的。
The non-olefinic resins may be chlorinated or non-chlorinated.
所述涂层体系包含一种或多种烯属化合物和一种或多种可溶于或可分散于所述一种或多种烯属化合物中的非烯属树脂。
The coating system includes one or more olefinic compounds and one or more non-olefinic resins which are soluble or dispersible in the one or more olefinic compounds.
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