weak

The illness left her feeling weak..疾病使她感到身体虚弱。

Poor light produces weak plants..光照不足，植物就生长不好。

The animal was weak from loss of blood..那只动物因失血而虚弱无力。

weak point,弱点（心理或身体上的残疾）；缺点

weak link,薄弱环节；弱键

weak force,弱作用力；弱核力；弱相互作用

weak acid,弱酸

weak rock,软弱岩石

weak spot,弱点

weak market,疲软的市场

weak light,弱光灯标；弱光灯

weak form,弱式；弱读式

weak current,弱电；弱流

weak coupling,弱耦合；疏耦合

weak base,[化]弱碱

weak solution,弱解；稀溶液

weak tea,淡茶

weak earthquake,弱震