The convoy was snowed up on the main road.

护送队被大雪困在干路上了.

《简明英汉词典》

They were snowed up for three days in the mountains.

他们在山里被大雪困了三天.

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In the winter the farm is often snowed up for several weeks.

这个农场冬天常被雪封住,一封就是好几个星期.

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They were snowed up in the valley.

他们被雪困在山谷中.

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The roads are snowed up.

道路被积雪覆盖.

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