我提到这个是因为这样的复杂度应该引起细心的读者的注意。对吗？
I mention this because such complications should alert the careful reader. Right?
他是个细心人，肯定注意到了这一点。
相反，它们任何一个都对其身边的鸽子保持着细心的注意，每只鸽子在空中盘旋时也遵循着简单的法则。
Instead, they're each paying close attention to the pigeons next to them, each bird following simple rules as they wheel across the sky.
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