The train slowed down [up] its speed.
火车的速度慢下来。
火车减速了。
The train slowed down to half its speed.
火车速度减慢了一半。
The train slowed down as it approached the station.
当火车进站时,它的速度慢了下来。
McGillicuddy's train slowed down again and the other began to gain speed.
麦吉利库迪的火车再次减速,而另一列火车开始加速。
The train should have slowed down.
那列火车早就该减速下来。
The train slowed (down) to thirty miles an hour.
列车减速至时速三十英里。
The train slowed (down) to thirty miles an hour.
列车减速至时速三十英里。
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