chēxiāng lǐ rén duō kōngjiān xiǎo dǎ diànhuà shēngyīn hěn róngyì yǐngxiǎng biérén

车厢里人多空间小，打电话声音很容易影响别人。

Carriages are crowded and space is limited, so talking on the phone can easily disturb others.