Entries can be quoted (single quotes). The whole string must be enclosed in quotes (double quotes), unless you reference the string from another cell. One of the entries can be the data field name.
是一个用空格分隔的列表。条目可以被引号（单引号）引起。整个字符串必须用引号（双引号）引起，除非您引用的字符串来自其他单元格。