Aerospace is the business of designing and building machines that fly in the air or go into space: aircraft, rockets, satellites, and the tools around them. People use it as a name for the whole industry — the companies, the engineers, the jobs, the money.

Aerospace是 is the business of designing and building machines that fly in the air or go into space設計、建造能在空中飛行或進入太空的機器的產業：aircraft, rockets, satellites, and the tools around them飛機、火箭、衛星，還有周邊的相關工具。People use it as a name for the whole industry人們用它來指整個產業——the companies, the engineers, the jobs, the money公司、工程師、工作機會、資金。

They also set it in front of other words: aerospace engineering, an aerospace firm, the aerospace sector. It is a formal, grown-up word; you will meet it in news and in science, not in the playground.

They also set it in front of other words他們也會把它放在其他字前面：aerospace engineering, an aerospace firm, the aerospace sectoraerospace engineering、an aerospace firm、the aerospace sector。It is a formal, grown-up word它是一個正式、成熟的字；you will meet it in news and in science, not in the playground你會在新聞和科學裡遇到它，不會在遊戲場上聽到。

Aero- points to the air; space points to what is beyond the air. The two were pushed together in the twentieth century, when flying and space travel began to share the same workshops and the same science.

Aero-Aero- points to the air指的是空氣；spacespace points to what is beyond the air指的是空氣之外的地方。The two were pushed together in the twentieth century這兩個字是在二十世紀被合在一起的，when flying and space travel began to share the same workshops and the same science當時飛行和太空旅行開始共用同樣的工作坊和同樣的科學。

Though actually, a paper plane is not aerospace, and neither is a city bus: the word stays with those machines, and with the industry that makes them.

Though actually不過實際上，a paper plane is not aerospace, and neither is a city bus紙飛機不是aerospace，市區公車也不是：the word stays with those machines, and with the industry that makes them這個字只用在那些機器上，還有做這些機器的產業上。