他把大量时间花在工作上，损害了他的婚姻。

He spent a lot of time at work, ___at ___the ___expense ___of his marriage.

我们不能以牺牲环境为代价来追求经济增长。

We cannot pursue economic growth ___at ___the ___expense ___of the environment.

她只专注于事业，却损害了她的人际关系。

She focused solely on her career ___at ___the ___expense ___of her personal relationships.