丸药

nǐ bì xū měi bàn xiǎo shí fú yī lì wán yào

你必须每半小时服一粒丸药。

You must take one pill every half hour.

wǒ měi tiān tūn diǎn wán yào

我每天吞点丸药。

I swallow a few pills every day.