like: sự nhiễm bẩn
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Composite Words Listening Comprehension Oxford Topics Duolingo Topics 315 Activities
BEGINNER LEVEL
exact:
VNEN 
sự nhiễm bẩn * ☊ 
pollution * ☊
[ sự ] : deed, act, action event, occurrence, (classifier for actions, states)
[ nhiễm ] : to be infected, catch, contract (an illness)
[ bẩn ] : (1) dirty, filthy; (2) stingy, miserly
[ nhiễm ] : infected