天安门广场的升旗仪式非常庄严。

Tiān'ānmén Guǎngchǎng de shēngqí yíshì fēicháng zhuāngyán.

The flag-raising ceremony at Tiananmen Square is very solemn.

他表情很严，好像在想什么重要的事。

Tā biǎoqíng hěn yán, hǎoxiàng zài xiǎng shénme zhòngyào de shì.

His expression was stern, as if he were thinking about something important.

法庭上气氛庄严，没有人敢出声。

Fǎtíng shàng qìfēn zhuāngyán, méiyǒu rén gǎn chū shēng.

The atmosphere in the courtroom was solemn, and no one dared to make a sound.