In Carboniferous forests dragonflies grew as big as ravens.

在石炭纪的森林里，蜻蜓长到大得像乌鸦。

They are the young stage of dragonflies predators that feed on worms and tadpoles.

它们是蜻蜓的幼虫，以蠕虫和蝌蚪为食的掠食者。

Dragonfly will be three meters long and more than a meter tall.

蜻蜓号有3米长，1米多高。

Dragonflies were the size of hawks, while some spiders were the size of small birds.

蜻蜓的体型和鹰一样大，有些蜘蛛的体型堪比鸟。

Dragonflies and swallows and nighthawks seine the air where the minute winged creatures flit out their minute life spans.

蜻蜓、燕子和夜鹰在天空中像围网似地捕食，而极小的有翼动物在空中轻快地飞来飞去，顷刻间想暂的命便结束了。

But freshwater insects, such as dragonflies and mosquitoes, have been growing in number over the years.

但是淡水昆虫，如蜻蜓和蚊子，数量在过去的几年里一直在增长。

That's right, Don. Yael, that's nonsense. Making a prediction would involve trigonometry. Dragonflies don't know trigonometry.

没错啊，老唐。 瑶瑶，这就胡扯了。做出预判需要三角学的知识，蜻蜓可不懂什么三角学。

Fortunately, Caohai's dragonflies are abundant and fast breeding, so Geng and his fellow fishermen have so far had little impact on their numbers.

幸运的是，草海的蜻蜓资源非常丰富且高速，所以老耿和他的渔民目前为止对它们的数量只有一点点影响。

Calm down, Don. Dragonflies don't know trigonometry, but the research shows that their brains are organized to perform the needed computations. Your brain is too.

老唐，淡定！蜻蜓的确不懂三角学，但该研究表明，它们的大脑结构能够进行必须的计算。你的大脑也是一样。

Within a few hours, Bogan counted seven different species of dragonflies. He even saw dragonflies and damselflies mating and laying eggs-at a river that had not existed earlier that day.

几小时内，博根数出了七种不同种的蜻蜓。他甚至看到蜻蜓和豆娘河流里交配和产卵，这条河流当天早些时候还不存在。

You can find this mouthpart on ants from the Hymenoptera order, grasshoppers and crickets of the Orthoptera order, dragonflies of the Odonata order, and beetles of the Coleoptera order.

这样的口器你可以在膜翅目的蚂蚁，直翅目的蚱蜢，蜻蜓目的蜻蜓，和鞘翅目的甲虫身上找到。

As northern Europe warms, the light-colored butterflies and dragonflies typically found in the Mediterranean find themselves able to survive in the newly warmer north, and to even outcompete their darker-colored rivals.

随着北欧气候变暖，浅色的典型地中海昆虫蝴蝶和蜻蜓发现自己比那些深色的同更适宜在温暖的北部存。

" Everybody was splashing around in the water, excited to see water back in the river. And what I immediately got sidetracked with was the number of dragonflies that I was seeing."

“每个人都在水里戏水，看到水又流回到河里，都很兴奋。我马上就转移了注意力，因为我看到了蜻蜓的数量。”

With more oxygen in the air, arthropods’ bodies could grow way bigger, leading to mega-bugs like a dragonfly the size of an eagle and a millepede the size of a two-person kayak.

以蜻蜓而言 在那个时代可以长得跟现在的老鹰般大 而马陆甚至可以长到如同双人橡皮艇般以蜻蜓而言 在那个时代可以长得跟现在的老鹰般大 而马陆甚至可以长到如同双人橡皮艇般。

Just three months later, the Bogan's team had documented roughly the same abundance and diversity of dragonflies that they'd seen in other parts of the river that have been flowing for years.

仅仅三个月后，博根的团队就记录了蜻蜓的数量和多样性，与他们在河流他地区看到的数量和多样性大致相同。

What had she been thinking of as the car sailed off the bridge, theft hung suspended in the afternoon sunlight, glinting like a dragonfly for that one instant of held breath before the plummet?

当她的汽车滑下桥、坠落沟底之前的一刹那，像一只闪光的蜻蜓悬在午后的阳光中，她想到了什么呢？