她头两次的化学作业都没有交，这使她开始这门课时成绩就不合格。
She didn't hand in her first two assignments for chemistry, which started her out in the class with a failing grade.
每年达到神户级别要求的合格数量仅有3000头，而每头牛只能产出大约400公斤的牛肉。
Only around 3, 000 heads qualify as Kobe grade annually, with each animal yielding about 400 kilos of beef.
如果您的信函让读者一头雾水，让他们不知道您要说些什么的话，那这样的信函是不合格的。
You fail by leaving the reader dumbfound and clueless as to why you sent such a letter.
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