Chinese phrase
〜多长？ 〜 duō cháng
Meaning
How long is ___?
When to use it
Asks how long something is or lasts. It is a neutral question pattern for physical length or duration, and the answer often gives a measurement or amount of time.
Example dialogue
这部电影 多长？ zhè bù diàn yǐng duō cháng
How long is this movie?
大约两个小时。 dà yuē liǎng gè xiǎo shí
About two hours.