number/amount/figure/quantity/sum/total/digital
记忆：
1. number [ 5nQmbE ] n. 数, 数字（指可数名词） Wait a moment. I will put your number down.等一下。我要把你的电话号码记下来。
2. numerous [ 5nju:mErEs ] adj. 众多的, 许多的, 无数的 Numerous people want to go to the park for free.许多人想免费去公园。
4. amount [ E5maunt] n. 数量 vi. (to) 总计, 等于（指不可数名词） The amount of the coal is not large enough to last to the end of this month.煤不足以维持到月底。
5. figure [ 5fi^E ] n. 外形, 轮廓, 体形, 数字 The figure shows that our national economy runs well at present.数字表明我们的国民经济目前运行良好。
6. quantity [ 5kwCntiti] n. 量, 数量 Large quantities of people and traffic are crowded in the narrow road at the rush hour. 高峰时候大量的人与车辆拥挤在狭窄的路上。
7. sum [ sQm] n. 总数, 和, 金额 The building of the language lab will certainly cost a large sum of money.修建语言实验室肯定会花一大笔钱。
8. total [ 5tEutl ] to-tal to, 到，tal, tall, 高，total, 达到高点，即总的 n.总数, 合计 adj. 总的, 全部的, 整个的 The cost totaled five million dollars.开支总计五百万美元。
9. digital [ 5didVitl] adj. 数字的, 数位的 n. 数字, 数字式 More and more digital devices are coming to offices and houses.越来越多的数字设备正在进入办公室和家庭。
另类阅读：
A larger number of people need a large amount of food which will cost a large sum of money. No one is sure about the exact total figure. Quantities of economic figures are doing research into it. Some digital equipment is at their service.