1 sentence

1. 尽管他心里很紧张，表面上却若无其事地微笑着。

   jǐn​guǎn tā xīn​li hěn jǐn​zhāng, biǎo​miàn shàng què ruò​wú​qí​shì de wēi​xiào zhe.

   Although he was nervous inside, he smiled on the surface as if nothing were wrong.

   Source: Dong Chinese Dictionary