同根派生 rail off相关词英汉例句The pond is railed off to stop children falling into it.池塘用栅栏围起隔开,以防止小孩落水。The bottom of the garden was railed off to stop the children straying into the road.花园的尽头用栏杆隔开,以防止小孩走到大路上去。rail off更多例句