underground

/ˈʌndɚˌgraʊnd/

adj./adv. 地下的；在地下
- The new library has an underground parking lot for bikes and scooters. 新圖書館有個給腳踏車和機車停的地下停車場。

其他意思

adj. 地下的

Underground groups and activities are secret because their purpose is to oppose the government and they are illegal.
- the underground Kashmir Liberation Front
n. 地鐵

The underground in a city is the railway system in which electric trains travel below the ground in tunnels.[BRIT]
- a woman alone in the underground waiting for a train
adv. 在地下

Something that is underground is below the surface of the ground.
- Solid low-level waste will be disposed of deep underground

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