The butterfly fluttered from flower to flower.

　　蝴蝶在花叢中飛來飛去。

　　Caterpillars change into butterflies.

　　毛蟲變成蝴蝶。

　　Butterfly is the only stroke I can't do.

　　只有蝶泳我不會(huì)。

　　She was third in the 200m butterfly.

　　她獲得200米蝶泳比賽的第三名。

　　The caterpillar will eventually metamorphose into a butterfly.

　　毛毛蟲最終將蛻變成一只蝴蝶。