alac·ri·ty /əˈlækrəti/
敏捷,輕快,樂意
A·lac·ri·ty n. A cheerful readiness, willingness, or promptitude; joyous activity; briskness; sprightliness; as, the soldiers advanced with alacrity to meet the enemy.
I have not that alacrity of spirit,
Nor cheer of mind that I was wont to have. --Shak.
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alacrity
n : liveliness and eagerness; "he accepted with alacrity" [syn:
briskness]