Flying fish can whip their tails back and forth with tremendous speed to propel themselves out of the water. Once airborne, they use long pectoral fins and shorter pelvic fins on the sides of their bodies to create lift, much like the wings of an aircraft. Sometimes the fish fly to escape fast-swimming predators like dolphins and tuna, but they may also take to the air because it is an efficient way to speed up their movement. Whatever the reason, once aloft they can glide for more than 40 seconds, cover 400 metres (1,312 feet) and move at about 70kph (43mph).
基于1个网页-相关网页
The wind that made such waves however, might have been too strong for the pterosaurs to control their flight once airborne.
然而，对于翼龙来说，产生这样的海浪的风可能过于强大，一旦在空中飞行，它们就无法控制自己的飞行。
Once airborne, a rocket's internal guidance systems take over, allowing it to home in on designated targets.
一旦开始飞行，火箭的内部引导系统即开启，使之对准既定目标。
Once airborne, and thus able to observe trees to the side of their glide-paths, some of the snakes turned towards them.
一起飞，这些树蛇就可以看到滑行路径两旁的树，一些就转变方向朝树木飞去。
应用推荐