We will require wisdom and resoluteness to ensure that migrating species can continue their journeying a while longer.

我们需要智慧和决心，以确保迁徙的物种能够在更长时间里继续它们的旅程。

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And with certain other migrating species, the challenge is complicated further—by vastly greater distances traversed, more jurisdictions, more borders, more dangers along the way.

对于某些其他的迁徙物种来说，挑战变得更加复杂——因为跨越的距离更大、管辖范围更广、边界更广、沿途的危险也更多。

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And with certain other migrating species, the challenge is complicated further-by vastly greater distances traversed, more jurisdictions, more borders, more dangers along the way.

对于其它某些迁徙物种来说，这种挑战更加复杂——因为一路上它们要穿越更长的距离、更多的行政区、更多的边界，经历更多的危险。

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Birdwatchers, for instance, can see some 140 species of migrating birds pass over Egypt's deserts, twice a year.

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The reserve is home to dozens of bird species and is visited by migrating bitterns.

BBC: Fire at Siddick Ponds