So when Moody's says a collateralized debt obligation, a corporate bond and a sovereign issue are all rated AA, the implication is that the three types of bonds are equally healthy.

也就是说，当穆迪将一种债务担保证券、一种公司债券和一种主权债券均评为AA级，那就意味着穆迪认为这三种债券的信用程度是相同的。

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In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.

在价电子成键理论中，所关注的是讨论成键，但这对于你们来说应该很熟悉，因为这是我们要讨论的两种键。

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According to the components of the reactants, the electron transfer reactions can be divided into three types: self-exchange reactions, cross reactions and bond-rupture electron transfer reaction.

若按反应物的组成来分，可分为自交换反应、交叉反应和键断裂反应三种类型。

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So in terms of thinking about ethane, we actually have two bond types that we're going to be describing just in terms of the carbon-carbon bond and then the carbon h bonds.

对于乙烷，我们有两种键,我们继续讨论一下,碳碳键,和碳氢键。

麻省理工公开课 - 化学原理课程节选

So, in general what we see, and this is always true if we're comparing the same atom, and in general, if we're comparing different types of molecules, but we know that a single bond is always weaker than a double bond, which is weaker than a triple bond.

通常我们会看到，这对比较相同原子来说总是正确的，通常，如果我们要比较不同种类的分子，但我们知道单键,总是要比双键弱，双键总是要比三键弱。

麻省理工公开课 - 化学原理课程节选

In these four periods of rising rates, managers had the acumen to navigate troubled waters by various techniques of managing bond types, sector allocation, duration, maturity, credit quality, country, and currency.

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The James Bond types are the second.

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The real creative types were the Bond villains, who had to come up with creative plans, communicate with and organize a vast array of minions, keep an eye out for meddlesome interlopers, and acquire and manage an array of techno tools.

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