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1·I always travel by underground.

我总是乘地铁。《牛津词典》

2·The miners were trapped deep underground.

矿工被困在地下深处。《牛津词典》

3·The train was trapped underground by a fire.

列车被一场大火困在了地下。《柯林斯英汉双解大词典》

4·I don't travel on the underground late at night.

我深夜不坐地铁。《柯林斯英汉双解大词典》

5·They found themselves in a vast underground chamber.

他们发现他们进入了一个地下大洞穴。《牛津词典》

6·Rescuers found victims trapped several feet underground.

营救人员发现有受难者被困在地下几英尺处。《牛津词典》

7·Radioactive water had seeped into underground reservoirs.

放射性水已渗入了地下蓄水池。《柯林斯英汉双解大词典》

8·Solid low-level waste will be disposed of deep underground.

低放射性固体废物将被弃置在地下深处。《柯林斯英汉双解大词典》

9·Police busted an underground network of illegal sports gambling.

警察突袭了一个非法体育赌博的地下网络。《柯林斯英汉双解大词典》

10·The electricity line is fed with power through an underground cable.

这条电线的电源是通过地下电缆传输的。《牛津词典》

地下

1·The miners were trapped deep underground.

矿工被困在地下深处。《牛津词典》

2·The train was trapped underground by a fire.

列车被一场大火困在了地下。《柯林斯英汉双解大词典》

3·Rescuers found victims trapped several feet underground.

营救人员发现有受难者被困在地下几英尺处。《牛津词典》

4·Radioactive water had seeped into underground reservoirs.

放射性水已渗入了地下蓄水池。《柯林斯英汉双解大词典》

5·Solid low-level waste will be disposed of deep underground.

低放射性固体废物将被弃置在地下深处。《柯林斯英汉双解大词典》

地铁

1·I always travel by underground.

我总是乘地铁。《牛津词典》

2·It is very convenient to travel in London by underground.

在伦敦游玩时，坐地铁是很方便的。

3·This is one of my favourite exercises as you can do it almost anywhere, I say almost as I couldn't imagine doing it on the underground without getting strange looks from those around me.

这是我最喜欢的眼操之一，因为几乎随时随地都能做，我说几乎的意思就是，我无法想象在地铁上做这项眼操时周围会没有奇怪的表情看着我。

4·Although cities are stretching their underground transportation networks like spiderwebs, new lines are too costly to reach every corner of the city.

尽管各个城市都在像蜘蛛网一样扩张地铁交通网络，要想新线路抵达城市的每个角落成本非常昂贵。

5·Mr Doukaiev had lodged in a hotel just yards from Denmark's busiest underground station, leading to speculation he may have had similar designs.

都凯夫曾在距离丹麦最繁忙的地铁车站仅数码的酒店住宿，不得不让人猜测他可能有类似的计划。

地底

1·There is, however, a lot of carbon dioxide underground, and when you drill for superheated water to turn your turbines, you often release it.

然而，大量的二氧化碳埋葬在地底，当你钻探时高温水带动涡轮机，这时二氧化碳通常会被释放出来。

2·The rescue in October of 33 miners trapped underground by rockfall was an impressive display of the Chilean state's competence.

十月份成功营救因塌方而被困地底的33名矿工的壮举深刻展示了智利的国家实力。

3·However, he continued to work underground as a miner during the week until 1896, when Manchester City finally insisted that he give up his colliery job.

然而之后的的一年他却回到阴暗的地底当起了矿工，随着1896年曼城一再坚持的征召下，他才放弃了那份挖煤的工作。

4·The carbon from the air will be captured and stored underground.

空气中的碳将被捕获并存于地底。

5·The find was made 1.5 miles (2.5 kilometers) underground during exploratory drilling for geothermal energy.

这次发现是在一次地热能钻探时，钻到地底1.5英里(2.5千米)的一次偶然事件。

在地下

1·You get bigger cracks and then passageways being formed along the openings in the rock and it's all underground.

你会看到更大的裂缝，然后是沿着岩石的开口形成的通道，这些都在地下。

2·Every part of the equipment is also repaired underground.

设备的每一部分零件均在地下维修。

3·I only wish us never to be parted: and should a word of mine distress you hereafter, think I feel the same distress underground, and for my own sake, forgive me!

我只愿我们永远不分离：如果我有一句话使你今后难过，想想我在地下也感到一样的难过，看在我自己的份上，饶恕我吧！

4·Carbon dioxide will be removed from the chimney using chemicals and turned into a liquid, ready for storage underground.

二氧化碳将被化学物质从烟囱中除去，转化为一种液体，从而可以被储存在地下。

5·Speaking at the biennial International Energy Conference, Tanaka said the problem is not underground, but above ground.

田中伸男在两年一度的国际能源会议上说，现在问题不是在地下，而是已经凸显出来。

地底下

1·These involve filtering out the carbon dioxide that is found along with the natural gas from two of its fields, and pumping it back underground at great expense.

这些方案包括将在其两块油田开发出的天然气顺带的二氧化碳过滤，并不惜一切代价将这些二氧化碳传输到地底下。

2·The mole digs holes and passages underground and makes its home in them.

那鼹鼠在地底下挖掘洞穴和通道，并且把家造于其间。

3·Once captured, the emissions will be 'injected' two kilometres underground, in what once was a natural gas reservoir.

一旦吸收后，排放量将会注入二公里的地底下曾是天然气体的储存器。

4·He rescued the man who was trapped underground.

他救了那个被困在地底下的男人。

5·Researchers are trying to understand the infection, but gathering specimens is difficult because the platypus is a nocturnal creature and spends much of its time underground or in the water.

研究专家努力了解这样的感染，不过收集样本并不容易，因为鸭嘴兽是夜行动物，大多时间都在地底下或水中。

地下组织

1·He was a courier for the Polish underground and parachuted into Warsaw.

他是波兰地下组织的信使，被空降到了华沙。《柯林斯英汉双解大词典》

2·Popular thriller writer Kristin Hannah turns to historical fiction in The Night gate to tell the story of two sister serving in France's underground during World War 2.

著名惊悚小说作家克里斯汀·汉娜的历史题材小说《夜色之门》讲述了二战期间，两个姐妹效力于法国地下组织的故事。

3·He attempted to get in touch with the Party underground but without success.

他试图和党的地下组织联系，但没有成功。

地埋

1·At present, the common underground pipelines are steel tube, reinforced concrete pipe, and PVC hard plastic tube. The cost of them is much high and it is also difficult to lay out.

目前常用的地埋管有钢管、钢筋混凝土管、PVC硬塑料管，这些管道的成本都较高，且施工难度大。

2·Underground Light: LED widely used for shopping centers, car parks, green belts, parks and other tourist attractions, and so on.

LED地埋灯的应用：广泛应用于商场，停车场，绿化带，公园旅游景点等变化场所。

3·Underground pipeline water delivery can save water, land, energy and labor. It is convenient for machinery work and field work.

地埋管道输水可节水、节地、节能、省工，便于机械作业和田间生产。

4·General Lightings: New generation light source, street light, table light, spot light, display light, decorative light, underwater light, underground light, contour light.

普通照明领域：新一代普通照明光源，路灯、台灯、射灯、珠宝灯、装饰照明、水底灯、地埋灯、建筑物轮廓灯。

(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