revert

1. V-I When people or things revert to a previous state, system, or type of behaviour, they go back to it. 恢复 (先前的状态、制度或行为)

Jackson said her boss became increasingly depressed and reverted to smoking heavily. 杰克逊说她的老板变得越来越抑郁，又重新大量吸烟了。

2. V-I When someone reverts to a previous topic, they start talking or thinking about it again. 重回 (先前的话题)[书面]

In the car she reverted to the subject uppermost in her mind. "You know, I really believe what Grandma told you."

在车里她又提起了她头脑里最重要的话题：“你知道，我确实相信奶奶告诉你的那些事。”

3. V-I If property, rights, or money revert to someone, they become that person's again after someone else has had them for a period of time. 归还[法律]

When the lease ends, the property reverts to the owner. 租约到期后，房屋归还业主。