Burns also indicated movement on reaching an agreement with India required by U.S.law for all foreign military purchases of sensitive American technology.

VOA: standard.2009.06.11

u=0 And it's approximately equal to zero for all real gas processes.

在所有理想气体绝热过程中Δ,对真实气体近似为零。

麻省理工公开课 - 热力学与动力学课程节选

Yeah, so first of all, I always wanted to, at least, stay for a while in the U.S.

首先，我一直就想，想在美国至少呆一段时间。

一见钟情的学校 - SpeakingMax英语口语达人

But the news is not all bad. The Commerce Department reports orders for U.S.

VOA: standard.2009.04.02

Well, all right, delta u is equal to zero for that.

好吧，绝热过程中。

麻省理工公开课 - 热力学与动力学课程节选

"Mortality disparities were noted for all four major U.S.racial and ethnic minorities groups."

VOA: standard.2010.04.07

U.S.airspace was closed for three days and European airlines cancelled all transatlantic flights.

VOA: standard.2010.04.17

Like the Bank of England, the U.S.Federal Reserve has all but exhausted one of its most powerful tools for stimulating the economy -- lowering the key interest rate that banks charge to lend to each other.

VOA: standard.2009.03.18

The threat,made on December 31 in a message posted on an extremist Internet Web site, prompted the Naval Criminal Investigative Service to elevate the risk for all U.S.military and commercial ships sailing through an area stretching from Somalia to the Persian Gulf.

VOA: standard.2010.01.07