1. The butterfly and the milkweed, although competitors in a way, cannot live apart. 蝴蝶和马利筋从一方面说是竞争对手，却又不能分开独立存活。
2. Overall, a monarch butterfly is no more or less striking than its host, the milkweed pod. 大体上，帝王蝴蝶和其宿主奶草豆荚谁也不比谁更显眼或更平庸。
3. I think I was a butterfly, a butterfly only to their own. A happy butterfly! 我想我是一只蝴蝶，一只只属于自己的蝴蝶。一只快乐的蝴蝶！
4. Our country rhopalocera besides the link butterfly branch, black doctor's fee types and so on spot butterfly, flowered corbicula butterfly has the distribution in this. 我国蝶类除环蝶科外，黑脉金斑蝶、花蚬蝶等种类在此均有分布。
5. Butterfly valves are commonly used for clip-on butterfly valve and two Flanged butterfly valve. 常用的蝶阀有对夹式蝶阀和法兰式蝶阀两种。
