The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。
新概念英语第二册 Lesson 21 Mad or not

📚 句中词汇解析

从本句中提取的重要词汇

airport ['ɛr'pɔrt] 词频1 词根: 运输
n. 机场;航空站;
💡 air空气，空中+port港口 → 机场，航空站
"waiting in the airport lounge"
在机场候机厅等候
近义：airfield
built [[bilt]] 词频1
build的过去式和过去分词
近义：constructed
reason ['rizn] 词频1 词根: 思考
n. 理由;原因;理性;理智; vt.& vi. 推理，思考;争辩;辩论;向…解释;
💡 再（re）生一个（a）儿子(son)， 理由是第一个儿子夭折了
"The reason for the flood was that heavy rain."
水灾是那场大雨造成的.
近义：ratiocinate, think, conclude, deduce, deduct, motivation 反义：idiocy, applesauce, imbecility, inaccuracy, inanity, mistake
used [just] 词频2 词根: 使用
adj. 用过的;习惯于;二手的;旧的; v. 使用（ use的过去式和过去分词）;常常，经常;
"Things ain't what they used to be."
现在情况不比从前了。
近义：outworn, worn, utilized, wonted, accustomed 反义：unused, unworn
years
n. 年代；岁月；年；年龄
近义：summers

📚 更多「新概念英语第二册」例句

Mr.James Scott has a garage in Silbury and now he has just bought another garage in Pinhurst.
詹姆斯。斯科特先生在锡尔伯里有一个汽车修理部，现在他刚在平赫斯特买了另一个汽车修理部。
'I am a foreigner,' I said.
“我是个外国人，”我说。
She will have something to drink but she will not eat any solid food.
她将喝些饮料，但不吃固体食物。
It rose out of the basket and began to follow the movements of the pipe.
它从筐里探出身子，随着乐器的摆动而扭动。
Of course, the Hubble is above the earth's atmosphere, so it will soon be sending us the clearest pictures of the stars and distant galaxies that we have ever seen.
当然，哈勃位于地球的大气层之外，因此，它很快就会给我们传送我们所见到过的、有关行星和远距离星系的最清晰的照片。
He has surely set up a record for the thousands of children who dream of evading school.
他无疑为成千上万梦想逃避上学的孩子们创造了一项纪录。