alacrity
n. 敏捷;轻快;乐意
例句
They accepted the offer with alacrity.
他们欣然接受了建议。
《牛津词典》
He hung his hat on a peg and flung himself into his seat with business-like alacrity.
他把帽子挂在钉子上,一本正经地迅速坐到座位上。
First, move with alacrity.
首先,动作敏捷。