metamorphose
/ˌmetəˈmɔ:fəuz; ˌmɛtə`mɔrfoz/ v[I, Ipr, Tn, Tn.pr]
~ (sb/sth) (into sth) (fml 文) (cause sb/sth to) change in form or nature （使某人[某物]）变形, 变质
A larva metamorphoses into a chrysalis and then into a butterfly. 幼虫变为蛹, 然後再变成蝴蝶.
The magician metamorphosed the frog into a prince. 魔术师把青蛙变成了王子.