护拦的英文：
rail
Please do not park in front of the Barrier
请不要在护拦前停车
n. 铁轨；横杆，扶手；抱怨，痛斥
To supply or enclose with rails or a rail.
用栏杆围提供栏杆或把栏杆围起来
The coal will be shipped by rail.
这些煤将用火车装运。
Trains run on rails.
火车在轨道上行驶。
Hold on to the rail or you'll slip!
抓住扶手，不然你会滑倒的。
Rust has corroded the steel rails.
锈侵蚀了钢轨。