例句：

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

　　交通法要到年底才生效。

　　Then officers waited for the drug to take effect.

　　然后，官員們等待藥物生效。

　　The aspirins soon take effect.

　　阿司匹林藥片很快見(jiàn)效。

　　The prescribed medicine failed to take effect.

　　醫(yī)生開的那藥沒(méi)有效果。

　　Three planes were standing on the tarmac, waiting to take off.

　　三架飛機(jī)停在跑道上，等候起飛。