He was much weakened constitutionally by the disease.

那场病使得他体质大大减弱。

The technique consists of injecting healthy cells into the weakened muscles.

这项技术包括把健康细胞注射进衰弱的肌肉里。

The recession has weakened so many businesses that many can no longer survive.

经济衰退削弱了很多企业的实力，以至于很多无法再生存下去。

It was clear that one massive Allied offensive would overwhelm the weakened enemy.

显然同盟国一次大规模的进攻就会彻底击败已被削弱的敌军。

Germany's attack has been weakened by the loss of some key players through injury.

德国队几名主力队员因伤不能上场，削弱了进攻力量。