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OXF3000N 
mối lo âu sự lo lắng 
anxiety
OXF3000N lo lắng suy nghĩ sự lo lắng suy nghĩ worry
like: sự lo lắng → →
Waiting for exam results is a time of great anxiety. ☊ anxiety ☊
He laughed to cover (= hide) his nervousness. ☊ cover ☊
She laughed to cover her nervousness. ☊ laugh ☊