attempt what is beyond one’s strength; bite off more than one can chew; go beyond one’s depth; kick against the pricks; lack of self-knowledge; not take a proper measure of oneself; overestimate one’s strength;overrate oneself; put one’s arm out further than he can draw it back again; unaware of one’s own limitations
❍ 他毛遂自荐要当厂长，有人认为他～。He had offered himself as director of the factory. Some people thought he was attempting what was beyond his strength.
自不量力
overestimate oneself (or one’s strength);overrate oneself; not know one’s own limitations
自不量力zì bù liànɡ lì
过高地估计自己的力量。do sth. beyond one’s ability, go beyond one’s depth, bite off more than one can chew