They decided to travel by night.

他们决定在夜里旅行。

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In order to avoid the heavy traffic on the roads, they prefer to travel by night.

为了避免公路行车拥挤，他们宁可夜间驱车远行。

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In order to avoid the heavy traffic on the roads, some people prefer to travel by night and rest during the day.

为了避免路上交通拥挤，有些人宁可夜间驱车远行，白天休息。

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Lieberman's plans to travel Tuesday night by chartered airplane to Wilmington, Delaware, were thwarted by the weather, when snow closed the airport in that city.

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The light it cast was enough to travel by without using their night-vision goggles.

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Those strong enough to go on will usually travel only at night, hiding by day under mesquite brush to avoid the sun and the spotter aircraft of the Border Patrol.

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