The traffic laws don't take effect until the end of the year.

交通法要到年底才生效。

The aspirins soon take effect.

阿司匹林药片很快见效。

The prescribed medicine failed to take effect.

医生开的那药没有效果。

To make the change take effect.

以使更改生效。

Take effect at a specified time.

在指定的时间生效。