雅思是沒(méi)有單詞大綱的一門(mén)考核烤鴨們綜合能力的英語(yǔ)考試，那么平時(shí)生活中單詞怎么背？最好的方法就是在考題中去背，follow me，跟隨我解讀真題背誦單詞吧！^^
The concept of the rocket, or rather the mechanism behind the idea of propelling an object into the air, has been around for well over two thousand years.
火箭的概念，或者更確切地說(shuō)，意圖把對(duì)象推進(jìn)到空氣中的機(jī)制，已經(jīng)出現(xiàn)了兩千多年。