Biological tests show that both fertilizers are helpful to improve lawn quality, reduce nitrate nitrogen leaching loss and raise fertilizers utilization rate.

生物试验表明：两种肥料有利于草坪质量的提高，减少土壤中硝态氮的淋失，提高肥料的利用率。

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The biological tests pro ve that the foreign gene can be introduced into plant cells and can be expressed effectively using the high voltage discharge gene gun.

生物学试验结果表明，高压放电基因枪能有效地将 外源基因导入植物细胞并得到表达。

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U. S. and Russian government officials say it is essential they keep some smallpox alive in case a future biological threat demands more tests with the virus.

美国和俄罗斯的官方表示，留存一些天花病毒以进行更多的测试，这对未来应对生物威胁是非常必要的。

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They use food frequency questionnaires, which I mentioned before, surveys, and then biological markers like blood tests of certain things to see how diet is related to health.

研究员还运用食物频率调查表,我之前曾提到过,各类调查以及生物标志物,像是血液检测等手段,来研究饮食与健康之间的关系

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

That means that a group of people who were identified and then re-measured every other year on -to getting blood tests and other biological markers, as well as doing assessments of their lifestyle behaviors and a number of other things.

就是说有一群特定的人,然后每隔几年,就要接受血液及其他生物学测试,还要对他们的生活方式等进行评估

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I'm talking about new initiatives like biological passports, random tests, research into new substances and so on.

BBC: Mario Cipollini backs embattled Alberto Contador

"The problem is that there is really a lot of biological and physiological knowledge that goes into interpreting these tests, " she says.

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He was joined by fellow grand slam winners Roger Federer, Novak Djokovic and Rafael Nadal in demanding stricter tests and in March the International Tennis Federation announced it would be introducing a Biological Passport program - a more stringent control against doping.

CNN: Murray condemns 'cover up' in Operation Puerto doping case