A new propulsion concept of 2 D C D vectoring nozzle was proposed, which had a convergent duct shaped by spheric surface and a divergent one with rectangular transverse section.

提出了一种二元收扩矢量喷管的概念，用热射流实验台对二元矢量喷管进行了过膨胀状态下的喷管模型热态实验。

youdao

The D.C.Commission on the Arts and Humanities has asked him to create large paintings on the walls of buildings.

VOA: special.2010.03.19

We'd expect you to write now or perhaps ever since this program was written as part of an obfuscated C contest.

我希望你们现在就开始写程序,否则你们将会在C语言比赛中,写得非常糟糕。

哈佛公开课 - 计算机科学课程节选

which is one of the few museums in D.C. that actually isn't free because it's not a national museum.

那是特区里少有的几个收费博物馆之一，因为它不是国家博物馆。

大都会艺术博物馆 - SpeakingMax英语口语达人

These narrators, most notable among them, for instance, are Ibn Ishaq (d. 761), Bukhari (d.870), Muslim (d. 875) and al-Baladhuri (d. c.892), provided the raw material for those who came later and sought to systematize the historical record and provide commentaries of their own on the earliest developments of Arab-Muslim history and Islamic civilization.

CENTERFORSECURITYPOLICY: Muslim-on-Muslim Violence

If any four atoms, let say, atoms A, B, C and D, would be selected to test the decay, atom A would have much lesser chance to respond to decay due to the existence of atoms B, C and D.

FORBES: Young Earth Creationists Whipsawed By IRS

It is the phenomenon whereby we assume that because people are good at doing A they will be good at doing B, C and D (or the reverse because they are bad at doing A they will be bad at doing B, C and D).

ECONOMIST: Idea