【英语时差8,16】飞机如何平稳飞行？（上）

Flying through turbulence¹ in an airplane is usually something of a nuisance; when that fasten-your-seatbelts sign comes on, you know you’re in for a bumpy² ride. On today’s Moment of Science, we’ll learn how airplanes use technology to avoid turbulence in the air ahead, and about systems that can help make flying a smoother, and safer, experience. Much turbulence is “convective turbulence,” and it’s the result of air motion associated with storm clouds. To help detect and avoid convective turbulence, airliners³ use radar⁴, which sends a radio signal ahead of the airplane. If there are raindrops or ice in the air ahead, these radio signals bounce back, letting the pilot know where turbulence might be. A more sophisticated system uses the same radar to determine the motion of the rain and ice particles as well as their location.

1 turbulence   

n.喧嚣，狂暴，骚乱，湍流

参考例句：

• The turbulence caused the plane to turn over.空气的激流导致飞机翻转。
• The world advances amidst turbulence.世界在动荡中前进。

2 bumpy   

adj.颠簸不平的，崎岖的

参考例句：

• I think we've a bumpy road ahead of us.我觉得我们将要面临一段困难时期。
• The wide paved road degenerated into a narrow bumpy track.铺好的宽阔道路渐渐变窄，成了一条崎岖不平的小径。

3 airliners   

n.客机，班机( airliner的名词复数 )

参考例句：

• The fog grounded the airliners. 大雾迫使班机停飞。 来自《简明英汉词典》
• They placed very stable and accurate atomic clocks on regularly scheduled jet airliners. 他们将非常稳定、准确的原子钟装在定期飞行的喷气式班机上。 来自辞典例句

4 radar   

n.雷达，无线电探测器

参考例句：

• They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
• Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。