Requitable
a. 有回報的, 可報復的
??? 情景例句
It really was a wonderful ceremony.
那真是一個美好的（結婚）典禮。
Sounds like fun.
聽起來很有趣。
These ocean waves are among the earth's most complicated natural phenomena,
這些海浪屬于地球上最復雜的自然現象。