(adj.) lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed); 'subterranean motives for murder'; 'looked too closely for an ulterior purpose in all knowledge'- Bertrand Russell .
(adj.) being or operating under the surface of the earth; 'subterranean passages'; 'a subsurface flow of water' .
整理:内莉
克林特手打