飞行器可以通过向左或向右改变航线来避免相撞。
Aircraft can avoid each other by altering course to left or right.
他们改变了飞往拉瓜迪亚机场的飞机航线。
但机上医疗紧急情况中的13%——每天大约有四例——严重到需要飞行员改变航线。
But 13% of in-flight medical emergencies–roughly four a day–are serious enough to require a pilot to change course.
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