vt.花費；消耗

He lived high and expended largely. 他生活講究，花費很大。

He has expended much time and energy on that experiment. 他已經(jīng)花費許多時間、金錢在那實驗上。

The soldiers expended all their ammunition in that fight. 士兵在那場戰(zhàn)斗中用盡了所有的彈藥。

I had expended much time on the work but they told me it's useless. 我花了很多時間在這件工作上，他們卻告訴我說這是無用的。

expend的基本意思是“花費,使用(錢等)做某事”,其賓語可以是錢、時間、精力等,常與in或on連用。