As everyone in this class should know, we usually look at the grain type within sandstone, meaning the actual particles in the sandstone, to determine where it came from.

上过这门课的同学都应该知道，我们一般会通过观察砂岩中的颗粒类型，也就是砂岩中的实际颗粒，来确定它的来源。

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Restrict the meaning of the class and prime words.

对类单词和基本单词的含义进行限制。

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This class is a singleton, meaning there's only one map of running server instances for all projects.

这是一个惟一的类，也就意味着所有项目正在运行的服务器实例只有一个惟一的映射。

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The president succumbed to this brinkmanship, saying he could not allow the Republicans' hostages, meaning middle-class taxpayers, to be harmed: a far cry from Bill Clinton's facing down of Newt Gingrich which led to the government shutdown of 1995.

ECONOMIST: Taxes, benefits and the deficit

Some first-class relics come with a red papal seal (meaning they've been vetted by the Vatican) and papers, usually in Latin, describing the item and its history.

FORBES: Magazine Article

The IRS only allows S-Corps to have one class of stock and they insist on equal ownership treatment, meaning no special allocations are allowed.

FORBES: New Tax Law Strokes Hedge Fund Managers