He constantly feels he has to prove himself to others.

　　他時常覺得自己必須向人一展身手。

　　She feels that life is passing her by.

　　她覺得人生所有的機遇和歡樂都與她無緣。

　　Part of me feels sorry for him.

　　我有點同情他。

　　He feels the cold a lot.

　　他很怕冷。

　　Its skin feels really smooth.

　　它的皮摸起來真光滑。