vt.

1. 治愈；使恢复健康[（+of）]
   A physician's sacred duty is to heal the sick.

   医生的神圣职责就是治愈病人。

vi.

1. （伤口）愈合；痊愈[（+over/up）]
   His shoulder healed, and he went back to his job.

   他的肩伤痊愈了，于是他回去继续工作。

v.

1. make or become sound or healthy again.
2. correct or put right (an undesirable situation).