The occupation time in a cone in the positive quadrant for a standard two-dimensional Brownian motion is studied, and its first and second moments are given explicitly.

考虑标准二维布朗运动在正象限锥形区域的占有时，得到其一阶矩和二阶矩的表达式。

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Within guest mode are the standard two modes, so that a guest operating system runs in guest mode but supports the standard kernel and user modes for its kernel and user-space applications.

在客户模式中有两种标准模式，因此客户操作系统在客户模式中运行可以支持标准的内核，而在用户模式下运行则支持自己的内核和用户空间应用程序。

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Central Standard Time, two o'clock Eastern Standard Time, some thirty-eight minutes ago."

VOA: special.2009.08.16

One standard deviation happens one draw out of three, two standard deviations one out of twenty, three standard deviations is one out of one hundred.

落在一个标准偏差之外的概率是1/3,两个标准差之外的概率是1/20,三个标准差之外是百分之一

耶鲁公开课 - 金融市场课程节选

I picked for it two dimensions as the standard way to explain it.

我选取二维的情形作为标准模型来讨论

耶鲁公开课 - 基础物理课程节选

The policies it bought were all past the standard two-year contestability period, Mr. Thomas said.

WSJ: Fortress and Phoenix in Battle Over Death Bets

The BR500's four-stroke engine is five times cleaner than the standard two-stroke models.

NPR: L.A. Looks to Cut Smog with Leaf Blower Trade-In

Another, Pure Alpha, which has the standard two-and-twenty charges, aims at beating the market return but also at limiting risk.

NEWYORKER: Mastering the Machine