disappoint的形容词形式怎么写

　　They were understandably disappointed with the result.

　　他们对结果感到失望是可以理解的。

　　They were bitterly disappointed at the result of the game.

　　他们对比赛结果极为失望。

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

　　她竭力不流露出自己有多失望。