A numerical or string expression to be printed. Multiple expressions can be separated by a semicolon. If separated by a comma, the expressions are indented to the next tab stop. The tab stops cannot be adjusted.
：要打印的任意数字或字符串表达式，多个表达式之间可以用分号分隔。如果用逗号分隔，表达式将缩进至下一个制表符。值得注意的是，无法调整制表符。