在一个任何人都可以传送或飞翔的世界中，大家都不会关注那些使用“速度秘籍”来超过其他用户的玩家。
In a world where everyone can teleport or fly, there's no concern about users using "speed hacks" to outrun other users.
流感通过载体的传播就像是人们坐飞机或是鸟儿飞翔一样，意味着区域变异会很快传播到世界各地。
The spread of flu by carrier is akin to flying people or birds, meaning regional variations can spread quickly around the world.
我有一种想法，就是对我们来说世界是一个我们所站立的平坦的东西，而对鸟来说是一个它们所依靠的峭壁，一个巨大的球，它们依靠在边上，然后离开、飞翔、滑行。
I have this theory that, to us the world is a flat thing we stand on, but to birds it is a cliff they cling to, a huge ball and they cling to the side and then fall off and fly and glide.
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