Day 924 
--- Proverbs ---
※ 原句 ※
A drop in the bucket.
九牛一毛，沧海一粟。
--- Oxford dictionary ---averageadj.
￡20 for dinner is about average.
花20英镑吃正餐算是价格一般。
③ordinary; not special
普通的；平常的；一般的
I was just an average sort of student.
我只是一个普通的学生。
averagely adv.
He was attractive and averagely intelligent.
他讨人喜欢，智力一般。
average n.
①the result of adding several amounts together, finding a total, and dividing the total by the number of amounts
平均数
The average of 4, 5 and 9 is average of $220 a year on toys.
父母为孩子买玩具的花费每年平均为220美元。
If I get an A on this essay, that will bring my average (= average mark/grade) up to a B+.
如果我的这篇论文得A，我的平均成绩就会提高到B+
