bite off more than can chew
贪多嚼不烂/心有余而力不足
口语·表示承担过多任务
英文释义
to take on more responsibilities or tasks than one can handle
例句
He took on three projects at once and realized he bit off more than he could chew.
典故来源
源自字面意思'咬下太多嚼不动'，比喻承担超出能力范围的任务。