业务决策是截断字段长度到 255 个字符，如果它超过，就作为后台系统请求；但必须向调用组件发送警告。

The business decision is to truncate the length of the field to 255 characters, if it exceeds, as required by the backend system; however a warning must be issued to the invoking component.

youdao

这个函数还不够灵巧，不能区分最后使用的示例中的字符值，所以不能警告用户。

This function is not smart enough to identify the character values in the final example of use and thus be able to warn the user. You could use a string pattern matching test such as.

youdao

如果出现任何关于字符集转换的警告或错误，请确保libiconv支持所需的字符集。

If any warnings or errors appear that relate to character set conversion, make sure libiconv supports the desired character set.

youdao