Over-qualified workers are likely to quit the minuter they find a better job.
学历高的人一旦找到更好的工作可能就会辞掉原来的工作。
So their entry into this flat was apparently not the burglars' first job that day and they must have been disturbed.
很明显,闯进这套公寓的窃贼那天并不是首次作案,而且他一定受了惊吓。