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1. The truck driver had to switch lanes on the highway to avoid a collision.
卡车司机不得不在高速公路上换道以避免碰撞。
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2. During the construction, we need to ensure that all vehicles switch their lanes safely.
在施工期间，我们需要确保所有车辆安全地换道。
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3. The traffic police were monitoring the highway for any potential hazards and instructed drivers to switch lanes if necessary.
交通警察正在监控高速公路，寻找任何潜在的危险，并指示如果必要的话，驾驶员们需要换道。