在追悼仪式上，人们通过鲜花和留言表达哀思。

Zài zhuīdào yíshì shàng, rénmen tōngguò xiānhuā hé liúyán biǎodá āisī.

At the memorial ceremony, people expressed their grief through flowers and messages.

这部纪录片是为了追悼那些无名英雄而拍摄的。

Zhè bù jìlùpiàn shì wèile zhuīdào nàxiē wúmíng yīngxióng ér pāishè de.

This documentary was filmed to commemorate those unknown heroes.

大家在雨中默哀，追悼在事故中遇难的同事。

Dàjiā zài yǔ zhōng mò'āi, zhuīdào zài shìgù zhōng yùnàn de tóngshì.

Everyone stood in the rain in silence, mourning the colleagues who died in the accident.