CSV 或 TSV 文件中的数据项可以有整数值、实数值、日期值或字符串值。字符串通常包含在引号中,并且可以包含逗号、制表符和换行符。如果复制了引号,那么可以将其导入。 例如,使用文本编辑器查看 CSV 文件,字符串 "This string has a comma, which is not imported and a quotation mark "" too" 将导入为:This string has a comma which is not imported and a quotation mark " too。