- They are the most abundant group of animals on Earth.
它们是地球上数量最多的动物 - Despite their current success,
尽管它们如今非常成功 - the ultimate flying insects first appeared back in the ancient swamps.
最终能够飞行的昆虫 最早出现在古代沼泽中 - Dragonflies.
蜻蜓 - Their flight is as close to perfect as it gets.
它们的飞行几乎堪称完美 - Four flexible wings,
四片灵活的翅膀 - independently controlled,
可以独♥立♥控制
Dragonflies. 蜻蜓
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