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Environmental Protection
Part 9
Part 10
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边
缘
biān
yuán
edge, fringe, verge, brink
过
滤
guò
lǜ
to filter, filter
逐
年
zhú
nián
year after year, with each passing year
防
止
fáng
zhǐ
to prevent, to guard against
防
治
fáng
zhì
prevention and cure