Before suture the 30 patients in the treatment group were washed with iodophor, while the 30 random selected patients in the control group were given routine alcohol sterilization.

将皮下缝合前用碘伏冲洗切口的30例手术患者作为治疗组； 随机抽取30例使用酒精常规消毒的患者作为对照组。

youdao

In this paper, investigation of scale and shape of 20 random selected ice cliffs in the debris-covered area of Koxkar Glacier is presented to explore the basic characteristics of ice cliffs.

采用随机抽样的方法对科其喀尔冰川表碛区冰崖的规模及形态进行了调查。

youdao

And then I'll create this function, d1 this distribution d 1, which will, whenever I call it, give me a random, a uniformly selected value between minus and plus volatility.

然后我会创建这个函数，这个概率分布，每次我调用这个函数的时候，他会给我返回一个随机的，按照均匀分布,从正负浮动值之间选择的值。

麻省理工公开课 - 计算机科学及编程导论课程节选

Each month eight women are selected at random to clean the town's public buildings.

BBC: Spain eurozone crisis: Where jobs are a lottery

The prices in each shop (and for each frame) were selected at random from between 60 and 120.

ECONOMIST: Economics focus

One entrant will be selected at random and invited to go on air.

BBC: The Eavesdrop: Terms & Conditions