Following the study, Puerto Ricans from across the island and many living on the mainland had their DNA tested by submitting samples of their saliva.
VOA: standard.2010.04.05
And here are the samples of the wavefunctions.
这是波函数的例子。
There's another sample which is in Russia, part of the former Soviet Union, where there are samples that were stored.
另一个样本在俄罗斯,前苏联的一部分,那也有储存的样本
They gathered hundreds of sea creatures and water samples to measure the garbage patch's effect on ocean environment.
VOA: special.2009.09.22
They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.
VOA: special.2009.01.20
The chip removed ninety-nine percent of the salt and other harmful substances from water samples.
VOA: special.2010.04.05
Samples of dung will also be gathered, photographs taken, and acoustic instruments will record the animals' distinctive calls.
VOA: standard.2010.01.05
The research team used what are called core samples from hundreds of trees throughout Southeast Asia.
VOA: standard.2010.04.05
One of those scientists. Kim Cecil,from the University of Cincinnati She was part of a team of researchers who took annual blood samples from several hundred lead-exposed children for more than 20 years.
VOA: standard.2009.12.19
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