Nate writes the seller of the shirt to ask the size

Nate:I am currently the highest bidder for your shirt. I was wondering about the size.

Re: It's a small.

Nate:How is the condition? How old is it?

Re: It has never been worn. It was too small for me so I'm selling it.

Nate:Why didn't you return the shirt or exchange it?

Re: I got it as a gift so I couldn't take it back. Good luck! I hope it will fit you!

condition (n.)

情况，状态

This car is in great condition.

这辆车的状况不错。

return (v.)

退还

I have to return this sweater – it's too small.

我要退还这件毛衣——太小了。

exchange (v.)

交换

You can exchange these jeans within a week of buying them.

你可以在购入一星期内退换这些牛仔裤。

奈特写信给衬衫的卖家问尺寸

奈特：我目前是你那件衬衫的最高出价者。我想问有关尺寸的问题。

回信：是小号的。

奈特：状态怎么样?新旧如何?

回信：从没穿过。我觉得太小了，所以才要卖掉它。

奈特：你为什么不退换这件衬衫呢?

回信：这是我得到的礼物，所以我无法退回。祝好运!我希望你穿会合身!