That's how the birds return to the same breeding, wintering, and stopover sites year after year.

这就是鸟儿如何年复一年地回到同一个繁殖地、过冬地和途经地的。

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The two airlines will also provide their passengers food and accommodation 4 services if flights are delayed or cancelled at stopover sites.

若航班在经停地点延误或取消，这两家航空公司还将向旅客提供食宿服务。

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The two airlines will also provide their passengers food and accommodation 4 services if flights are delayed or cancelled at stopover sites.

若航班在经停地点延误或取消，这两家航空公司还将向旅客提供食宿服务。

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