而不是在数组的每个部分调用html_safe然后从中创建一个新的（非html安全的）字符串，在从 generate_line ：

Instead of calling html_safe on each part of the array and then making a new (non-html-safe) string from it, try calling it at the end, after the string is returned from generate_line:

<%= CSV.generate_line(row).html_safe %>