So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.

这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。

麻省理工公开课 - 化学原理课程节选

Last week, the firm cut Cyprus's sovereign-debt rating a notch to triple-C from triple-C-plus, saying it sees the economy now shrinking 6%, heightening the risk that Cyprus may not be able to meet the terms set for the loan.

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The consortium can call off the GMAC deal if GM's debt sinks below triple-C.

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The counterparty was the troubled bond insurer ACA Financial Guaranty, which Moody's cut dramatically from A to triple-C one day in December.

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