signal box
英 [ˈsɪɡnəl bɒks]
美 [ˈsɪɡnəl bɑːks]
n. (铁路上的)信号房
牛津词典
noun
- （铁路上的）信号房
a building beside a railway/railroad from which rail signals are operated
柯林斯词典
- (铁路上的)信号房，信号楼
Asignal boxis a small building near a railway, which contains the switches used to control the signals.
英英释义
noun
- a building from which signals are sent to control the movements of railway trains