/səb'saɪdns, 'sʌbsɪdns; səb`saɪdns,`sʌbsədəns/
1 [U] process of subsiding (subside1) 下降; 回落; 回降
*the gradual subsidence of the river 河水的逐渐回落.
2 [U, C] process or instance of subsiding (subside2, 3) （土地或建筑物等的）下陷
*a building damaged by subsidence 因地基塌陷而毁坏的建筑物
* The railway line was closed because of
(a) subsidence. 这条铁路因土地下陷而停止运营.
n [U and C]
the process by which an area of land sinks to a lower level than the land surrounding it, or a building begins to sink into the ground
Is your house insured against subsidence?