海
水
倒
灌
h
á
i
h
ǎ
i
s
h
u
ǐ
s
h
u
ǐ
d
à
o
d
à
o
g
u
à
n
g
u
à
n
Definitions
1. saltwater intrusion
Components
海水
hǎi shuǐ
–
seawater
倒灌
dào guàn
–
to flow backwards (of water, because of flood, tide, wind etc)