n.敏捷；活潑；樂意
She sprang to the door with alacrity. 她敏捷地跳到門口。
Although the man was very old, he still moved with alacrity. 他雖然很老,動作仍很敏捷。
He carved, and ate, and praised with delighted alacrity. 他邊切邊吃，又興致勃勃地贊不絕口。
