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A few final adjustments
这只公凸眼蝇
to straighten out any remaining creases
细心地抚平眼柄
and he's ready for action.
准备展开求爱大作战
They may look unwieldy,
眼柄看来也许很麻烦
but eyes on stalks improve not only his ability to spot predators,
但不仅方便注意掠食动物
but they are key when it comes to winning females.
也是求爱时的利器
In the evening both males and females gather
傍晚时雄虫和雌虫聚在一起
and the males begin to size one another up,
雄虫开始大眼瞪小眼地
eyeball to eyeball.
彼此打量
Having the widest eye span
两眼间距最宽的凸眼蝇
puts you at the top of the pecking order.
就可以称老大
The eye stalks are not weapons,
眼柄不是武器
they're measuring sticks, used to gauge
而是丈量工具，用来测量公凸眼蝇的
how big, and so how strong, a male is.
体型和力气
But there's trouble if two top males have exactly the same eye width.
但若两只眼距相同的公凸眼蝇 碰在一起就有麻烦了
Then the contest descends into a brawl.
原本的君子之争迅速变成混战
