Anxiety can be caused by lack of sleep.

　　睡眠不足可能導(dǎo)致焦慮。

　　The decision occasioned us much anxiety.

　　這個(gè)決定讓我們憂慮不堪。

　　She felt an anxiety bordering on hysteria.

　　她感覺到一種近乎歇斯底里的焦慮。

　　My sister puzzles me and causes me anxiety.

　　我的妹妹常會(huì)讓我不解，使我焦慮。