出气筒

出气筒

Literally means:

punching bag

Actually means:

someone who serves as a vent to other people's anger

The phrase refers to someone who, without any reason ,becomes a vent to other people's anger.

It is unfair and unreasonable to be treated by others as a vent to their anger without any reason, so this phrase implies the displeased or indignant feeling of the speaker, or that he or she has no choice but to endure this unfair treatment.

比喻没有任何原因，就受到了别人的气的人。

没有任何原因就受到别人的气，被当作出气筒，这是不公平的、不合理的，因此，包含了说话人的不满、不平的情绪，或者虽然不高兴，却只好忍受。