disappoint的形容詞形式怎么寫

　　They were understandably disappointed with the result.

　　他們對結果感到失望是可以理解的。

　　They were bitterly disappointed at the result of the game.

　　他們對比賽結果極為失望。

　　She tried her hardest not to show how disappointed she was.

　　她竭力不流露出自己有多失望。