柯林斯词典eager beaver 1. N a person who displays conspicuous diligence, esp one who volunteers for extra work (尤指自愿做额外工作的)特别卖力的人[非正式] 返回 eager beaver剑桥词典a person who is willing to work very hard 干活特别卖力的人;对工作极有热忱的人 返回 eager beaver