逐漸枯竭
peter out
v 1: end weakly; "The music just petered out--there was no proper
ending" [syn: {taper off}, {fizzle out}, {fizzle}]
2: use up all one's strength and energy and stop working; "At
the end of the march, I pooped out" [syn: {poop out}, {run
down}, {run out}, {conk out}]