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1·They stayed under ground for two days.

他们在地下呆了两天。《新英汉大辞典》

2·Come in, there is a coffee bar under ground.

进来吧，地下有个咖啡厅。

3·Magma extravasated as pressure built under ground.

当地底下的压力生成时，岩浆喷发。

4·The ground will shake while the guards are under ground.

这些卫兵在地下时，地面会震动。

5·The system function was simulated and testing under ground support equipment.

在地面支持设备上对系统功能进行了仿真和测试。

6·Where are leaves, flowers, fruits without roots which work unknown to pulic under ground?

没有根须默默无闻地深扎于土地里，又哪儿来的枝叶、花朵和果实？！

7·This article discusses the two noticeable problems in the construction of under ground continuous wall.

本文就地下连续墙施工中这两个应注意的问题进行了讨论。

8·The heating efficiency of heat exchange system with solar energy under ground in vinyl-house was evaluated.

利用半被动式太阳能地下热交换贮能增温系统为塑料大棚加温。

9·This method reduces toxic pollution and makes it easier to capture and sequester gases like carbon dioxide under ground.

这一方法降低了有毒污染，并能够使捕捉和储存二氧化碳等气体的过程得到简化。

10·Roots quietly absorb juice under ground for fruit. Fruit is praised because of its sweetness. But how can root be praised?

根在地下默默地为果吸收浆汁。果因甜美而备受称赞，可人们该如何称赞根呢？

(1)underground water地下水；潜水

(1)underground space地下空间

(1)underground mining地下开采；地下采矿

(1)an underground地下工作者

(1)underground mine地下矿山；地下开采矿

(1)underground garage地下车库