Ex. : Don't take it out on me. I'm not here for you to vent your anger on.

例：别有火就往我身上发，我不是你们的出气筒。

youdao

Above valve mouth in, pull out, give vent to anger door needle, set free to the limit;

气门嘴处于上方，拔出气门针，余气放尽；

youdao

So they've now actually had the opportunity to vent out the anger that they've been having.

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