擅長的單詞怎么寫

　　He is adept at getting himself out of difficult situations.

　　他善于使自己擺脫困境。

　　She is adept at cooking.

　　她善于烹飪。

　　They are adept at evading such tasks.

　　而他們卻是擅長于逃避此類任務。

　　My teacher is adept at designing robots.

　　我的老師對設計機器人是個內行。