1、
2、
3、
4、
It was a steel bridge of a single span and there was a sentry box at each end.
那是一座单孔铁桥，两端各有一个岗亭。
互联网摘选
5、
At night I park the car outside the Polish embassy, within sight of a sentry box, to deter thieves.
晚上我把车停在波兰大使馆外，岗亭看得到的地方，以防止窃贼。
provided by jukuu
6、
