该产品的三种代表样品已经过检测，并将在本报告的主题部分展开描述。
Three representative samples of the subject product were examined and are described in the body of this report.
抽样问题：有关源和代表性样品的证据，你的听众和您使用的是形成清晰的推论并得出结论。
Sampling issues: clarity about the source and representativeness of samples of evidence that your audience and you are using to form inferences and draw conclusions.
您现在所看到的只是个初步的样品，但它代表我们未来智能型产品线的主力。
It's only a prototype but it's a prime example of our future line of smart products.
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