zài / yōng / jǐ / de / chē / xiāng / lǐ / qǐng / dài / hǎo / kǒu / zhào / jiǎn / shǎo / fēi / mò / chuán / bō

在拥挤的车厢里，请戴好口罩，减少飞沫传播。

In a crowded carriage, please wear your mask properly to reduce the spread of droplets.