underground

US /ˈʌndərgraʊnd/

UK /ˈʌndəgraʊnd/

B1 中級英檢初級
adj.形容詞在地下的;在地面以下的
There is an underground lake in this cave
n.名詞地下組織
The French underground fought the Germans for many years in World War II
n.名詞地下鐵
Take the underground from Westminster to the next station
adj.形容詞秘密的
The underground resistance movement.

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