under ground

• 地下

英英释义

名词 underground:

1. a secret group organized to overthrow a government or occupation force

2. an electric railway operating below the surface of the ground (usually in a city)

形容词 underground:

1. under the level of the ground

2. conducted with or marked by hidden aims or methods

副词 underground:

1. in or into hiding or secret operation

2. beneath the surface of the earth