Then, at the far end of the Potomac River bridge, the first shots were fired.

接着，在波托·马可河铁路大桥的末端响起了此次进攻的第一枪。

youdao

They will have built the bridge by the end of the year.

到今年年底，他们就将把这座桥建好了。

youdao

They will have built the bridge by the end of the year.

到今年年底，他们就将把这座桥建好了。

youdao