2 sentences

1. 我很惊讶，平时沉默寡言的他竟然能在台上自如地演讲。

   wǒ hěn jīng​yà, píng​shí chén​mò​guǎ​yán de tā jìng​rán néng zài tái shàng zì​rú de yǎn​jiǎng.

   I was surprised that he, who is usually a man of few words, could speak so naturally on stage.

   Source: Dong Chinese Dictionary

2. 他虽然平日里沉默寡言，但关键时刻却表现出了硬骨头精神。

   tā suī​rán píng​rì lǐ chén​mò​guǎ​yán, dàn guān​jiàn shí​kè què biǎo​xiàn chū le yìng gǔ​tou jīng​shén.

   Although he is usually a man of few words, he showed an unyielding spirit at the critical moment.

   Source: Dong Chinese Dictionary