I'd like to return this 我想退货
例句：
I'd like to return this，this one doesn't suit me.
我想退货，这个不适合我。
I'd like to return this, I found it broken when I got home.
我想退货，我回家时就发现它坏了。
A:You look good in red.
你穿红色真好看。
B:Thank you, but I'd like to return this.
谢谢，但是我想退货。
A:Why?
为什么呢？
B:Because I'd like to get one in a larger size.
因为我想买一个更大号的。