It's specialized to generate the enormous power required for flight, and it fills the middle portion of the fly, so when a fly hits your windshield, it's basically the power muscle that you're looking at.
它有专门来生成所需的飞行的巨大的力量 它填充着中间的部分 所以，当一只苍蝇撞到你的挡风玻璃， 你看到的基本上它的力量型肌肉