Definition (聯繫)
to reach out to someone by phone call or visit to confirm everything is fine or to report one's own status
聯繫查詢；報平安
I check in with my parents every day to make sure they're doing well.
我每天都會和父母確認一下，確保他們一切安好。
If you are traveling, remember to check in with your friends regularly about how you are doing.
如果你正在旅行，記得要定期和朋友報平安，告訴他們你的近況。
I visited my neighbors last night to check in on how they were doing.
我昨晚拜訪了鄰居，看看他們過得怎麼樣。