他默默地工作，从不抱怨。

Tā mòmò de gōngzuò, cóng bù bàoyuàn.

He works silently and never complains.

她默默地站在一旁，观察着每个人的反应。

Tā mòmò de zhàn zài yīpáng, guānchá zhe měi ge rén de fǎnyìng.

She stood silently on the side, observing everyone's reactions.

孩子们默默地听着老师的讲解。

Háizimen mòmò de tīngzhe lǎoshī de jiǎngjiě.

The children listened silently to the teacher's explanation.