参见：效力;效果

• 功效显著

  have an obvious effect

• 证件过期无效。

  The ID is out of date and invalid.

• 这些药片已经失效了。

  These medicines became ineffective long ago.

• 治疗已见效。

  The treatment has taken effect.

• 条约自签字之日起生效。

  The treaty takes effect from the date of signing.

仿效to imitate

• 上行下效

  subordinates follow the example of their superiors

参见：效劳[xiàoláo]