Professional institutions have sampled, tested and tracked those connected to the case.

专业机构已对相关人员进行采样检测和跟踪管理。

Fifteen-year-old Valieva reportedly had three different substances in her drug test sample.

据报道，在15岁的瓦利耶娃的药检样本中含有三种不同的物质。

The only way you'll know that is by actually taking a sample test.

您知道的唯一方法是实际进行样本测试。

If it's on the sample test it's not on the real thing.

因为既然是样题 就肯定不会出现在真题上。

According to one environmental working group analysis, the USDA has found that nearly 70% of conventionally grown produce samples tested positive for pesticide residues.

根据一项环境工作组的分析，美国农业部发现，近 70% 的传统种植农产品样品的农药残留检测呈阳性。

If you look at the sample tests that have been provided, the answers provided by the students here are like 75 words on average.

如果你看一下已经提供的示例题，这里的学生提供的回答平均有 75 个单词。

I mean from a book, or from some software, or online there are sample tests available which represent that exam.

我的意思是从一本书，或者从一些软件，或者在线有可用的样本测试代表该考试。

Last week what appeared to be a leaked food inspection report from Gansu surfaced online showing sample tests on pork products from 11 producers including Sanquan.

上周，一份泄露的甘肃食品检测报告在网上曝光，显示包括三全在内的11家猪肉生产商的猪肉产品的抽样检测。

This reaction produces a change in color, indicating that the sample tested positive and that the individual has been exposed to the virus.

这种反应会导致颜色发生变化，表明样本检测呈阳性， 并且该人已接触过该病毒。