為什麼打蒼蠅總是「揮棒落空」？
（illustrated by Sheena Shih）
為什麼打蒼蠅如此困難？
(A) 在蒼蠅的意識中，時間流逝地較為緩慢。
In the fly's mind, time passes more slowly.
(B) 蒼蠅的眼睛能看見的事物遠多於人類的眼睛。
Flies' eyes can see much more than people's eyes.
(C) 你揮舞的手所產生的風可以使牠飛得更快速。
The wind from your hand makes it fly faster.
一些有關動物的研究報告顯示了一些有趣的事：
Several studies about animals show something interesting.
對體型較小的動物來說時間過得比較慢；體型較大的動物則會覺得時間過得比較快。
Time moves more slowly for small animals and more quickly for larger animals.
蒼蠅能以人類的 4 倍速度更快地看見光線閃爍，這代表蒼蠅眼中的世界是慢動作的！
Flies can see flashes of light four times faster than people can. That means flies can see in slow motion!
這麼一來，牠們就可以快速飛離危險的事物。
Because of this, they can fly away quickly from dangerous things.
對於蒼蠅來說，能否快速地逃脫可是生死攸關。
Getting away fast could be the difference between life and death for a fly.