## zh-CN

通过 `prefix` 自定前缀，通过 `suffixIcon` 自定义选择框后缀图标，通过 `expandIcon` 自定义次级菜单展开图标。

## en-US

Use `prefix` to customize the prefix content, use `suffixIcon` to customize the selection box suffix icon, and use `expandIcon` to customize the current item expand icon.