v use up, consume fully
v pay out
vt. 花费, 消耗, 用光
1. The company decided to expend more resources on marketing this year.
这家公司决定今年在市场营销上投入更多资源。
2. It's important not to expend all your energy at once when exercising.
锻炼时，重要的是不要一次性耗尽所有的精力。
3. They plan to expend effort on improving customer service.
他们计划在改善客户服务上投入精力。