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315 Activities V
exact: like: sự suy giảm
VNEN 
sự suy giảm * ☊ 
decrease * ☊
[ sự ] : deed, act, action event, occurrence, (classifier for actions, states)
[ suy ] : to consider, think, reflect; to decline, weaken
[ giảm ] : to decrease, cut down, reduce, lessen, drop, fall