1·When did the first aircraft fly?
第一架飞行器是什么时候起飞的？
2·That's why jet aircraft fly in the lower stratosphere !
这就是为什么飞机要在低平流层飞行的原因。
3·Nowadays most aircraft fly high, well above the clouds and weather, but their crews are still vitally interested in landing conditions at their destination, i. e. the cloud base and visibility there.
如今，大多数的飞机飞得很高，远在云层之上，不受天气影响，但是飞机的工作人员仍然非常关心目的地的着陆条件，也就是，云层底下的清晰度。
4·To fly such an aircraft, their builders must develop different forms of aviation, because they seem to fly much faster than normal aircraft.
为了驾驶这样的飞机，它们的制造者必须开发不同形式的航空技术，因为它们似乎比普通飞机飞得快得多。
5·The aircraft was a delight to fly.
驾乘这种飞机是一件乐事。
—— 《柯林斯英汉双解大词典》
6·The first C919 aircraft can carry 168 passengers and is able to fly a distance between 4,075 and 5, 555 kilometers.
第一架C919飞机可搭载168名乘客，飞行距离为4075至5555公里。
7·According to its proponents, a proposed new style of aircraft could, by skimming along the top of the atmosphere, fly between most points on Earth in under two hours.
根据其支持者的说法，一种新型飞机掠过大气层，可以在两小时内飞到地球上的大多数点。
8·Unlike high altitude aircraft, helicopters aren't so vulnerable to being seen by radar, as they fly low and are often hidden by the terrain. The big issue is the sound.
与在高空飞行的飞机不同，直升机不容易被雷达发现，因为它的飞行高度较低，且常常被地形所隐藏，因此最大的问题是噪音。
9·In the 1960s and 1970s, most personal and corporate planes were propeller or turbo-prop aircraft, which fly at a lower altitude than jetliners.
在1960和1970年代，大部分个人和企业的飞机是飞行高度低于喷气式飞机的螺旋桨式或涡轮螺旋桨式飞机。
10·When you look at the literally millions of hours we fly, it’s a miracle we don’t have more accidents or more aircraft go down.
看看我们数百万小时的飞行记录吧，没有更多的意外发生，没有更多的飞机坠落，真是个奇迹。