break-in
n.(名词)Forcible entry, as into a building or room, for an illegal purpose, especially theft.破门而入:为非法目的强行闯入,如进入一幢建筑物或一个房间,尤指盗窃An initial period of employment or operation during which the performance of a person or thing may be evaluated and adjusted.试验性操作,初试阶段:雇佣职员或操纵机器的最初阶段,在此期间可对一个人或物的表现进行评估和调整