I was tired of his cheap jokes at my expense.

我讨厌他拿我开低级庸俗的玩笑。

《牛津词典》

All pending AD sales will be refunded at MY expense.

所有进行中的广告出售都将退回，代价由我支付。

youdao

This will only give others a new excuse for laughter and derision at my expense.

这只会给别人一个新的借口来对我冷嘲热讽。

youdao

He likes to include some snarky comments on the footnotes generally about me at my expense.

他喜欢把我的一些无礼的话,也记录下来，反正都是我说的。

哈佛公开课 - 计算机科学课程节选

Every year I look at my expense with a fresh eye.

FORBES: Look Into Your 2012 Crystal Ball

And in an era of stagnant wages and global competition, opportunity comes to be seen as a zero sum game, in which your dreams come at my expense.

NPR: Obama And The Politics Of Being Biracial

If one purchases, for example, the right to fish in my lake for an hour, the potential exists either for the purchaser to gain excessively at my expense, or vice versa.

FORBES: Magazine Article