A few minutes later, a train from the west arrived at Harpers Ferry. The wounded guard warned the trainmen of the danger at the bridge.

几分钟后，一列从西开过来的火车到达了哈珀斯，这名受伤的看守警告列车员，桥上危险。

youdao

TRAFFIC is light on the bridge linking Ciudad Hidalgo in Mexico to Tecún Umán in Guatemala. Tricycle-taxi drivers and an armed guard idly stand around in the sun.

连接墨西哥Ciudad Hidalgo至危地马拉Tecún Umán的桥梁上交通顺畅，出租三轮车司机和一名武装警卫闲站在太阳下。

youdao

Ten soldiers were detailed to guard the bridge.

十名战士被派去保卫那座桥梁。

youdao

The wounded guard warned the trainmen of the danger at the bridge.

VOA: special.2009.06.25

The guard raced back across the bridge to the railroad station.

VOA: special.2009.06.25

At the bridge, Brown's men surprised a railroad guard.

VOA: special.2009.06.25

They range from creating bridge guard rails in Bessemer, Alabama, to renovating elementary schools in Norfolk, Virginia.

CNN: Obama shines stimulus spotlight on urban economy

Security sensors also have been built into the new bridge to guard against terrorist attacks.

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At either end of this 1, 280-metre (4, 200-foot) long suspension bridge, both the police and the National Guard are stationed like anchors watching the traffic and keeping a keen eye out for anything unusual.

BBC: California's bridges 'under threat'