strong （强壮的），反义词weak（虚弱的，弱小的）。
strong造句：He is a strong man。
他是一个强壮的男人。
weak造句：And even stumbling speech may strengthen a weak tongue.
即使是磕绊的话语也会强壮无力的舌头。
例句：
1.I was too weak to move or think or speak
我太虚弱了，无法动弹，无法思考，也无法说话。
《柯林斯高阶英汉双解学习词典》
2.Until the beating, Cantanco's eyesight had been weak, but adequate
挨打前坎坦科的视力就一直很弱，不过也还勉强看得见。
《柯林斯高阶英汉双解学习词典》
3.He was a nice doctor, but a weak man who wasn't going to stick his neck out
他是位为人和蔼的医生，但胆小怕事，不敢冒什么风险。
《柯林斯高阶英汉双解学习词典》
4.His weak voice was almost inaudible
他的声音微弱，几乎听不见。
《柯林斯高阶英汉双解学习词典》
5.The owner said the bird may have escaped through a weak spot in the aviary
鸟的主人说这只鸟可能是从鸟舍一处不结实的地方逃走的。
