C/N ratio can be taken as a rooting index of elm tip.

碳/氮比率可作为白榆新梢生根的指标。

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Normal vector points up. Imagine that you put your thumb along c, your index towards s and then your middle finger points up.

法向量向上，想象你把你的大拇指沿着C放，食指指向s，那么你的中指就会向上。

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The vegetation cover and management factor ( C ) in the universal soil loss equation (USLE) is an index to evaluate this effect, which has been studied deeply and used widely.

通用土壤流失方程（USLE）中的植被覆盖与田间管理因子（C）是评价这种抑制作用的有效指标，并被广泛采用和深入研究。

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Again I should have said first, index 0, the first one. I can similarly go in and say I'd like all the things between index 2 and index 4. And again, remember what a b c that does. Index 2 says start a 0. 1, 2. So a, b, c.

我还是要说一遍，索引为0的元素，是第一个元素，我可以要求返回索引,2和4之前的所有元素，请记住2,是从0开始的,那么0，1，2对应的是。

麻省理工公开课 - 计算机科学及编程导论课程节选

With this sequence of bets you'll (a) be exposed to market losses to the extent of the money you paid for the trade, (b) get triple the index return up to 15%, (c) give up any gains above 15%.

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According to the ETF Finder at ETF Channel, C and BAC collectively make up 15.62% of the iShares Dow Jones U.S. Financial Services Index Fund ETF (IYG) which is lower by about 0.9% on the day Thursday.

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