消耗,耗盡,放血
Depletion \De*ple"tion\, n. [Cf. F. d['e]pl['e]tion.] 1. The act of depleting or emptying. 2. (Med.) the act or process of diminishing the quantity of fluid in the vessels by bloodletting or otherwise; also excessive evacuation, as in severe diarrhea.
depletion n 1: the act of decreasing something markedly 2: the state of being depleted