Chinese phrase
有〜可用吗？ yǒu 〜 kě yòng ma
Meaning
Is there ___ available?
When to use it
Asks whether something is available. It is a simple, polite way to ask if an item, place, or service can be used.
Example dialogue
图书馆 有 公共电脑 可用吗？ tú shū guǎn yǒu gōng gòng diàn nǎo kě yòng ma
Are there shared computers available in the library?
有，可以用，不过需要先登录。 yǒu ké yǐ yòng bú guò xū yào xiān dēng lù
Yes, you can use them, but you need to log in first.