Yóuyú guòdù chōuqǔ dìxiàshuǐ, chéngshì chūxiàn le chénjiàng.
Due to excessive groundwater pumping, the city has experienced subsidence.
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沉降 is a technical word used in geology, civil engineering, and chemistry: 地面沉降 (land subsidence), 建筑沉降 (building settlement), 沉降速度 (sedimentation rate). 沉 ('sink') + 降 ('descend') stack two near-synonyms for emphasis.
