fly简单

Butterflies may not pollinate as many plants as wild bees and hoverflies, but because British butterflies are the best-studied group of insects in the world, they are an extremely useful indicator of the wider declines in flying insects.

蝴蝶授粉的植物也许不如野蜂和食蚜蝇那么多，但由于英国蝴蝶是世界上被研究得最透彻的昆虫类群，它们是反映飞行昆虫更大范围减少的一个极其有用的指标。

That makes it sound easy, and artificial, but Peters insists it is still a massive challenge. He typically takes between 10,000 and 20,000 shots to get one butterfly take-off sequence in focus. At such high shutter speeds, the depth of field is tiny, and as butterflies do not fly in a straight line they swiftly flutter out of focus. As well as thousands of attempts, it takes patience and fieldcraft to anticipate a butterfly’s likely flight-line — and catch it — in focus.

这听起来既简单又人为，但彼得斯坚称这仍是一项巨大的挑战。他通常要拍一万到两万张照片，才能得到一组对焦清晰的蝴蝶起飞序列。在如此高的快门速度下，景深非常小，而且蝴蝶并不沿直线飞行，很快就会扑腾着飞出焦点。除了成千上万次的尝试，还需要耐心和野外经验来预判蝴蝶可能的飞行路线——并在焦点内捕捉到它。

We can offer them a visit to Blackwater National Wildlife Refuge in Dorchester County where bald eagles fly over tidal marshes so shallow you could not paddle a boat across them but teaming with aquatic life.

我们可以邀请他们参观多切斯特县的布莱克沃特国家野生动物保护区，在那里，白头海雕飞翔在潮汐沼泽上空，这些沼泽浅得连船都划不过去，却充满了水生生物。

Think of those fleeting moments when you look out of an aeroplane window and realise that you are flying, higher than a bird.

想一想那些转瞬即逝的时刻：你从飞机舷窗向外望去，意识到自己正在飞翔，比鸟儿飞得还高。

Justice Anthony Kennedy, joined by Chief Justice John Roberts and the Court’s liberals, ruled that the state flew too close to the federal sun.

大法官安东尼·肯尼迪与首席大法官约翰·罗伯茨以及最高法院的自由派法官一致裁定，该州过于逼近联邦的权力范围。