The Red Arrows are the Royal Air Force aerobatic display team. The trails of coloured smoke they leave in the sky are made by releasing diesel into the exhaust, which oxidises and leaves a trail of smoke. In this photo, dyes have been added to produce a blue and red colour.考生如果怕自己錯過考試報名時間和考試時間的話，可以 免費預約短信提醒，屆時會以短信的方式提醒大家報名和考試時間。

紅箭是英國皇家空軍的空中特技飛行表演隊。飛機在空中飛過時會留下一縷縷有顏色的煙霧。這些煙霧是飛機從排氣管釋放柴油，然后通過氧化過程而形成的。在這張照片中，柴油里加入了紅色和藍色的染料，所以噴出的煙霧有了顏色。

Daniel is such a high-flyer. He's only 31 years old and he's already the financial director of the company.

My brother is a high-flying businessman and travels all over the world.

請注意

另外有一個短語 high-flown, 雖然拼寫很像 high-flyer，但含義不一樣，意思是夸張的，華而不實的。

He tried to seduce Katherine with high-flown language, but she wasn't impressed.

Peter has high-flown ideas about morality but he's never nice to me!

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