例句：
He accepted her offer with alacrity.
他欣然接受了她的'建议。
She sprang to the door with alacrity.
她轻捷地一纵身向门口跳去。
She sprang to the door with alacrity.
她敏捷地跳到门口。
He accepted my invitation with alacrity.
他欣然接受我的邀请。
As you can imagine, I accepted with alacrity.
你可以想象得到，我欣然接受了。