零 + Noun/Number
The word 零 (líng) means "zero" and is used in numbers, times, and measurements. In time expressions, it appears in phrases like 零点 to indicate midnight (0:00). It can also be used between digits in large numbers where a zero placeholder is needed.
今天气温降到了零下五度。
Jīntiān qìwēn jiàng dào le líng xià wǔ dù.
The temperature dropped to minus five degrees today.
比分是三比零,我们赢了。
Bǐfēn shì sān bǐ líng, wǒmen yíng le.
The score is three to zero — we won.
房间号是二零三,在二楼。
Fángjiān hào shì èr líng sān, zài èr lóu.
The room number is 203, on the second floor.