I make to swing it but realize it will fly out of my hand if I do.
我想挥挥手，但意识到如果这样做的话，它会从我的手中飞出。
2
On the other hand, rainfall increased in the interior of western Africa, and the northern limit of the tsetse fly, an insect fatal to cattle, moved south.
另一方面，西非内陆的降雨量增加，采采蝇活动区域的北部边界向南移动——一种对牛致命的昆虫。
3
With the string in hand, the son started to fly the kite.