sink;subside;cave in 樓房的地基開始～。The foundations of the building are starting to sink./由于地基不實，房子出現(xiàn)～。Weak foundations caused the house to subside./礦井因地震而～。The mines caved in during the earthquake.
下陷xià xiàn
sinking of gastrosplenicqi; collapse of gastrosplenic qi