几乎有一半在英国繁殖的鸟类要冬徙，有时飞越的距离相当惊人。
Almost half of the bird species that breed in Britain leave for the winter, sometimes travelling prodigious distances.
可以远距离飞越、威胁远离原生地数百公里或数千公里之外的作物的蝗虫和其它迁移性虫害亦是如此。
The same is true for locusts and other migratory pests that can fly over great distances and threaten crops hundreds or thousands of kilometres away from their places of origin.
这就是“司琴”，一颗直径约100公里的小行星。 今年七月，欧洲太空总署发射的航天器——罗塞塔号近距离飞越了这颗星。
This is Lutetia, a 100km-long asteroid visited in July by the European Space Agency’s craft Rosetta.
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