Chinese phrase
〜多长时间？ 〜 duō cháng shí jiān
Meaning
How long does ___ take?
When to use it
Asks how long an activity, trip, or process takes. It is a neutral, common way to ask about duration.
Example dialogue
从机场到市中心多长时间？ cóng jī chǎng dào shì zhōng xīn duō cháng shí jiān
How long does it take from the airport to the city center?
坐地铁大约三十分钟。 zuò dì tiě dà yuē sān shí fēn zhōng
It takes about 30 minutes by subway.