效力

wǒ yuàn wèi jiào yù xiào lì

我愿为教育效力。

I would like to devote myself to education.

yǒng yuǎn bù yào wàng jì wèi guó xiào lì

永远不要忘记为国效力。

Never forget to serve your country.

tā men yuàn yì zài zǔ guó xū yào de shí hou wèi tā xiào lì

他们愿意在祖国需要的时候为她效力。

They were willing to serve the fatherland in its hour of need.

yào de xiào lì hěn xiǎo

药的效力很小。

This medicine is not very efficacious.

nǐ de quàn gào méi xiào lì

你的劝告没效力。

Your advice had no effect.

zhè yào yīn shòu cháo shī qù le xiào lì

这药因受潮失去了效力。

The drug has lost its potence by being exposed to moisture.