This powerful drug is used to tranquilize patients undergoing surgery.

这种强效的药物用于使手术中的病人失去知觉。

Words are the most powerful drug used by mankind.

言词是人类最有效的药物。

It contains a powerful drug which affects mosquitoes.

它含有一种较强的药物可以防止蚊虫叮咬。

It contains a powerful drug which affects mosquitoes.

它包涵了一种强大的可以影响蚊子的药物。

"Light affects so many biological systems," she added. "Light is a very powerful drug for the brain."

光亮影响着如此多的生物系统，简直就是大脑的强效药。“她说。”