Crossbuck
01
X形标志, 铁路道口标志
a sign shaped like an X that marks a railroad crossing
例子
The train stopped when the crossbuck sign showed up.
当crossbuck标志出现时,火车停了下来。
Drivers must look for the crossbuck to know a train is coming.
司机必须寻找X形标志以知道火车即将到来。



























