13.Recently they have laid an underground pipeline.
最近他们铺设了条道。
14.the New York underground art scene.
纽约先锋艺术景观。
15.Is Tom underground?” “No, he is at grass.”
“汤姆矿井了吗?” “不, 他在坑上面。”
16.workers undergrounding telephone lines.
安置电话线的工人
17.It was like the Black Hole of Calcutta on the underground this morning.
今天早晨铁里又挤又热。
18.The house has an underground passage.
这房子有条通道。
19.This is the biggest underground lake yet discovered.
这是迄今为止所发现的最大湖。
20.Geological radar is a non-destructive test instrument that detect the underground objects by the quality of discontinuousness of the underground medium.