to impair

• 妨害健康

  harmful to one's health

• 妨害团结

  harmful to unity

• 吸烟妨害健康。

  Smoking is bad for one's health.

• 杂草妨害庄稼的生长。

  Weeds harm crop growth.

• 雨水过多，会妨害大豆生长。

  Excessive rain can impair the growth of soybeans.