Definition (联系)
to reach out to someone by phone call or visit to confirm everything is fine or to report one's own status
联络查询；报平安
I check in with my parents every day to make sure they're doing well.
我每天都会和父母确认一下，确保他们一切安好。
If you are traveling, remember to check in with your friends regularly about how you are doing.
如果你正在旅行，记得要定期和朋友报平安，告诉他们你的近况。
I visited my neighbors last night to check in on how they were doing.
我昨晚拜访了邻居，看看他们过得怎么样。