to chain sb/sth to sth用链条把某人∕某物固定在某物上
The dog was chained to the leg of the one solid garden seat.狗被拴在花园一张固定座椅的腿上。
Some demonstrators chained themselves to railings inside the court building.有些示威者用链条把自己锁在法院大楼内的栏杆上。
She chained her bike to the railings.她用链条把自行车锁在栏杆上。