The results of the sample for the test have shown that the quantity of fatty substance in milk is appropriate to the standard.

采样检验的结果表明牛奶中的脂肪含量达标。

《新英汉大辞典》

This is a substance that is either produced by the tumor or by the body in response to the tumor, and can be measured by a blood test.

肿瘤标志物是肿瘤自身产生或机体对肿瘤应答所产生的一种物质，可以通过血液实验了检测。

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This tunnel is, in substance, a simple air flow bench with necessary test devices offering various controlled streams for experiments.

这种风洞实质上是一种简单的气流试验台，它通过配套的设备能为实验提供各种可控制的气流。

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That person must have been surprised when the substance passed the test.

VOA: special.2010.02.09

The ATP has refused to comment on Greg Rusedski's positive test for the banned substance, but insists it will enforce any punishment meted out to the player.

BBC: SPORT | Tennis | Tennis drug tests questioned

Its report also said Armstrong made a "financial agreement" to bury a positive test for a banned substance and accused the team of falsifying prescription records to cover corticosteroid use by Armstrong.

CNN: Lance Armstrong's legacy may withstand accusations

They are working with the Farmwatch scheme in the Test Valley to introduce a liquid substance which can be added to fuel to "chemically tag" it.

BBC: Heating oil 'tagged' to tackle rural theft in Hampshire