He beliewd that no class hour is a success unless the students and the piofessor share several chuckles and at least one loud laugh.
在他看来如果师生在一堂课上没有几次会心 的笑声或至少一次开怀大笑，就不是一堂成功 的课。
He beliewd that no class hour is a success unless the students and the piofessor share several chuckles and at least one loud laugh.
在他看来如果师生在一堂课上没有几次会心 的笑声或至少一次开怀大笑，就不是一堂成功 的课。
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