ground depression

基本解釋

Surface subsidence (ground depression) caused by the overuse of ground water.
過(guò)度抽取地下水引起的地面沉降。
The depression of the ground are covered with black and fertile soil, where the vegetation is vigorous .
凹地上覆蓋著一層肥沃的黑土，植物長(zhǎng)得茂盛。
translation-dictionary.net
This paper aims at the study of 3D numerical simulation of the groundwater flow field of the Changzhou-Wujin district, for revealing the main cause of the depression of the ground surface.
通過(guò)研究常州-武進(jìn)地區(qū)地下水流場(chǎng)的3維數(shù)值模擬，揭示了該地區(qū)產(chǎn)生地面沉降的主要成因。

The depression left by the blast at ground zero is barely visible.
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