如果从1980年开始算起，每位妇女只能生一胎，那么中国的人口在2010年时，应该少3.4亿；
If each woman had been allowed only one child since 1980, China’s population would have been 340m smaller than it was in 2010.
每个嵌套的括号对，从左开始算起，每个左圆括号加一，放在下一个特殊的数字变量中。
Each nested set of parentheses, counting from the left, incrementing at each left parenthesis is placed in the next special, numerical variable. For example.
他们都是从拇指开始算起的。
应用推荐