unknown error未知错误 双语例句1ERROR: An unknown error occurred while checking for circular references and unreachable steps.错误：检查循环引用及不能实现的步骤时发生未知错误。 2Could not open the Appointment for editing. The system reported an unknown error code.无法打开约会进行编辑。系统报告了未知错误代码。
