| 释义 |
〔slough〕A depression or hollow, usually filled with deep mud or mire.泥坑：充满深深的泥沼的凹地或洼地〔basin〕A large, bowl-shaped depression in the surface of the land or ocean floor.凹地，海盆：在陆地或海底平面的一种大的，碗状的凹地〔pocket〕A small cavity in the earth, especially one containing ore.凹地：地球的小凹穴，尤其含有矿石的凹穴〔pit〕To mark with cavities, depressions, or scars:使凹下：使有洞、凹地或断层： |