act out
US /ækt aʊt/
UK /ækt aʊt/

1.
2.
行为失常, 发泄情绪
to express one's feelings or thoughts through behavior, especially negative ones
:
•
He tends to act out when he's stressed.
他压力大时容易行为失常。
•
The child was acting out because he wasn't getting enough attention.
孩子行为不端是因为没有得到足够的关注。