这种新药的效果非常强效，能迅速缓解疼痛。

This new medicine is highly ___potent, providing quick pain relief.

这位70岁的老人依然保持着生育能力。

The 70-year-old man remains ___potent and capable of fathering children.

这种药效很强的止痛药只能在医生指导下使用。

This ___potent painkiller should only be used under a doctor's supervision.