Occurring sequentially from top to bottom, within each iteration, r, d, c, and t represent some of the standard disciplines executed in each iteration (Requirements, Design, Code, and Test).

在每个迭代中从上到下顺序发生的R、D、c和t表示在每次迭代中执行的一些标准规程(需求、设计、代码和测试)。

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The roles down the side are Requirements (R), Design (D), Code (C), and Test (T).

在一边的任务是需求（Requirements，R）、设计（Design，D）、编码（Code，C）和测试（Test，T）。

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Shi C. H. , R. W. Du, D. W. Lin, W. G. Zhang and Z. T. Shen, A new indica rice variety Zhe-Nong 8010 with disease resistance, high quality and yield.

石春海、杜如伟、林大为、章旺根和申宗坦，优质高产抗病早籼品种浙农8010的选育及利用。

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In August,American Secretary of State Hillary Clinton promised more than seventeen million dollars to fight sexual violence in the D.R.C.

VOA: special.2009.10.24

We talked with Jamaica Corker, on her cell phone, at the Population Services International office in the D.R.C.

VOA: special.2010.05.03

The debate has transcended the parties and entered the political realm, with Senators Tom Harkin (D-Iowa) and Jim DeMint (R-S.C.) taking sides.

FORBES: Boeing Boosts Production of 737s As It Battles The Machinists' Union