Chinese phrase
可以把〜换开吗？ ké yǐ bǎ 〜 huàn kāi ma
Meaning
Can I exchange ___ for another one?
When to use it
A polite way to ask if one item can be exchanged for another. It is common in shops and sounds respectful when speaking to staff.
Example dialogue
您好，可以把我刚买的雨衣换开吗？ nín hǎo ké yǐ bǎ wǒ gāng mǎi de yǔ yī huàn kāi ma
Hello, can I exchange this raincoat I just bought for a different one?
没问题，请把发票给我，我帮您换一件合适的。 méi wèn tí qǐng bǎ fā piào gěi wǒ wǒ bāng nín huàn yí jiàn hé shì de
No problem. Please give me the receipt, and I will help you exchange it for a suitable one.