Correct

下陷

/ xiàxiàn / 
Strokes

Definition

to subside/subsidence

Example

As a Verb

sink; subside

1
Dàlóu
大楼
yīcè
一侧
yǐ
已
kāishǐ
开始
xiàxiàn
下陷
  
。

The building has begun to sink on one side.

2
Dìjī
地基
xiàxiàn
下陷
le
了
  
。

The foundations have subsided.

3
Yǎnwō
眼窝
xiàxiàn
下陷

have sunken eyes

4
Dìcéng
地层
xiàxiàn
下陷

subsidence