If you prefer to stay in cheap hotels while travelling, make sure you can lock the door of your room from the inside.

如果你在旅行时喜欢住便宜的旅馆，一定要确保你能从里面锁上房间的门。

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Luckily, they owned a caravan, a kind of car designed for people to live in while travelling.

幸运的是，他们有一辆大篷车，一种为人们旅行时居住而设计的汽车。

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One has to bear a little discomfort while travelling.

旅行中总要忍受一点不便。

《新英汉大辞典》

Mr Myers was stabbed repeatedly while travelling on a bus in the heart of the Jewish community.

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It comes after three British soldiers were killed by a bomb while travelling though Southern Afghanistan.

BBC: Prince of Wales's Division band trains for Afghanistan

The reception isn't great while travelling at speed and doesn't work at all underground.

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