它采用的四发涡轮增压发动机、高单翼和尾部大型货仓设计使其已经累积飞行时间已经超过2000万小时，是美国和超过60个国家的首选运输机。
The turbo-prop, high-wing, versatile “Herc” has accumulated over 20 million flight hours. It is the preferred transport aircraft for many US Government services and over 60 foreign countries.
Pilobolus剧团以吸收不同寻常的元素出名，不过最为新奇的恐怕要属这两个在乔伊斯舞台上为舞者MattDelRosario伴舞的四螺旋桨直升机（学名“四旋翼飞行器”）。
Pilobolus is known for dances that incorporate unusual elements. Few, though, have been stranger than the two four-rotored helicopters that accompanied Matt Del Rosario on the stage of the Joyce.
四旋翼无人直升机由于其飞行控制相对容易，安全性也得到了较大的改善，越来越受到研究人员的关注。
Because the flight control of four-rotor unmanned helicopter is relatively easy and its security has been improved greatly, it is paid more attention by researchers.
福克斯新闻说明到：两名获救船员由一支四人的机组通过飞机营救上岸，机组成员包括这位康桥公爵、皇位的第二顺位人、皇家空军的直升机飞行员。
The two men were airlifted to safety by a four-man crew, which included the Duke of Cambridge — second in line to the throne — who is a Royal air Force helicopter pilot, Fox News explains.
她原本向往的是一个战斗机飞行员，由于受她父亲一些深受鼓舞，高中毕业后她从事教学工作一直从四年级到六年级。
She originally aspired to be a fighter pilot, something encouraged by her father, but ended up teaching grades 4 through 6 after graduating from high school.
为了详细研究食蚜虻的飞行，该小组使用四部高速数字摄影机，利用摄影测量学技术来重构每个翼在大约22 个位置点的动作。
To study the hoverflies in detail, the team used four high-speed digital video cameras to reconstruct the motion of approximately 22 points on each wing using photogrammetric techniques.
有人从室外摄像机的拍照记录里看到了疑似ufo的奥秘飞行物天外来客私语者，更怪异的是，该飞行物与一只小鹿“四目相对”了一段时间，似乎在私聊。
It was seen from the outside of the camera photographed in the suspected UFO mystery Flyers, more bizarre it is that the Flyers with a deer "four eyes" for some time, it seems that in private chat.
直升机中速后退飞行的过程中做两个四位横滚，横滚的四个停顿点要清楚。
With the helicopter moving backwards at medium pace, the helicopter will be aileron-rolled twice, each roll being clearly delineated by 4 hesitation points.
直升机中速后退飞行的过程中做两个四位横滚，横滚的四个停顿点要清楚。
With the helicopter moving backwards at medium pace, the helicopter will be aileron-rolled twice, each roll being clearly delineated by 4 hesitation points.
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