The virus is currently spreading westwards along the flyways of wild birds and it has arrived at the front door of European countries.
病毒目前正在沿着野鸟的飞行路线向西蔓延，已经抵达欧洲国家的前门。
It is also an important habitat for migratory birds for the world's 10 flyways, supporting some endangered species of migratory birds Photograph: Jacky Chen/Reuters
这里还是世界上重要的候鸟栖息地，有10条迁徙路线从这经过。它还为一些濒危的鸟类物种提供生衍繁息之所。
It is also an important habitat for migratory birds for the world's 10 flyways, supporting some endangered species of migratory birds Photograph: Jacky Chen/Reuters
这里还是世界上重要的候鸟栖息地，有10条迁徙路线从这经过。它还为一些濒危的鸟类物种提供生衍繁息之所。
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