Significados de unusual alertness em inglês

Zeena had an air of unusual alertness and activity.

She must have been asleep for some hours when suddenly she awoke with unusual alertness.

He would have been killed except that his enormous strength and unusual alertness made him too valuable.

There was a somewhat unusual alertness in Borrowdean's manner as he passed out from the little house in Sloane Gardens and summoned a passing hansom.