In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.
在 A、B、C、D 和 F 评分体系中，前四个字母通常被认为是及格。
This amounted to a declaration that if Greece seeks debt relief, the E. C. B. will pull the plug on the Greek banking system, which is crucially dependent on those loans.
这就等于宣布，如果希腊寻求债务免除，欧洲银行将停止希腊的金融系统，该系统严重地依赖这些贷款。
"Failing is baked into the core concept of the mechanic" of our A-B-C grading system in schools, he said at a tech conference this year in Austin, Texas.
他在今年德克萨斯州奥斯汀的一次科技会议上说，“失败充满了我们A - B - C的升级系统的核心机制中”。
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