释义
v. 花费,消耗,支出
例句
1. I had expended much time on the work but they told me it's useless. 我花了很多时间在这件工作上，他们却告诉我说这是无用的。 2. The soldiers expended all their ammunition in that fight. 士兵在那场战斗中用尽了所有的弹药。