1 sentence for 亮 (liàng — show)

1. 他进站时向工作人员亮了一下自己的身份证。

   tā jìn​zhàn shí xiàng gōng​zuò rén​yuán liàng le yī​xià zì​jǐ de shēn​fèn​zhèng.

   He flashed his ID card to the staff as he entered the station.

   Source: Dong Chinese Dictionary