Using letter of indemnity to obtain a clean B/L is a common practice.

用保函换取清洁提单被普遍采用。

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But a scandal this summer at the University of Florida revealed that even some B-schools still have to clean up their act.

然而今年夏天美国佛罗里达大学(University of Florida)爆出的丑闻则显示，即便一些商学院也必须自我检点。

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B: I like a clean shaven man.

我喜欢把胡子剃干净的男人。

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Joachim Schmidt, global head of sales and marketing for Mercedes, says until batteries get cheaper and lighter, Mercedes will respond to demand for exhaust-free cars (and California clean-car mandates) with small vehicles such as the tiny electric Smart and the compact B-Class, and offer plug-in hybrid versions of its larger models, including the S-class sedan.

WSJ: Five Cars and the Quest to Please All Buyers