牛津电影里 60%
由某人付钱;由某人负担费用
paid for by sb
At our expense.
牛津电影里 40%
在某人受损的情况下;以某人为代价;跟某人开玩笑
if you make a joke at sb's expense, you laugh at them and make them feel silly
Lloyd got a great deal of enjoyment at my expense when he was alive.
释义来自《牛津高阶英汉双解词典》第 9 版