Following the Harvard scandal, Mary Miller, the former dean of students at Yale, made an impassioned appeal to her school's professors torefrainfrom take-home exams.
哈佛丑闻发生之后，耶鲁大学前学生事务主任玛丽·米勒慷慨激昂地呼吁教授避免学生在家考试。
2
I made a terrific effort torefrainfrom tears.
我狠着心把泪止住。
《新英汉大辞典》
3
The new plan promises torefrainfrom any price regulation;