Chinese phrase
可以用〜吗？ ké yǐ yòng 〜 ma
Meaning
Can I use ___?
When to use it
It asks politely for permission to use something. The item being requested usually follows it, often in a short request.
Example dialogue
我可以用一下你的手机吗？ wǒ ké yǐ yòng yí xià nǐ de shǒu jī ma
Can I use your phone for a moment?
可以，用完记得还我。 ké yǐ yòng wán jì de huán wǒ
Sure, remember to give it back when you're done.