adj.地下的；隱蔽的

The subterranean passage led to a cave. 地下的通道通向一個(gè)山洞。

It is impossible to pack so many refugees into the subterranean dwelling. 這地下住所擠不下那么多的難民。

All night he heard the subterranean workman, who continued to mine his way. 他整夜都聽(tīng)著那個(gè)隱蔽的工作者，那個(gè)人在繼續(xù)他的挖掘工程。