Correct

沦陷

/ lúnxiàn /
Strokes

Definition

to fall into enemy hands/to be occupied/to degenerate/to submerge

Example

As a Verb

(of territory) be occupied by the enemy; fall into enemy hands

1
Shǒujūn
守军
chètuì
撤退
  
,
chéngshì
城市
lúnxiàn
沦陷
  

After the defending troops retreated, the city fell into enemy hands.

As a Verb

submerge; flood; inundate; drown