sample of goods 货样 ; 样本异质性
Sample of No Value 无价值的样品 ; 免费货样
sample of yarn 纱线试样
Sample of representatives 代表样本
Sample of no commercial Value 无商品价值样品 ; 没有商业价值的样品
Random sample of cases 随机抽样 ; 随机选取个案
'I'd like to see a sample of your work,' said the manager.
“拿一件你做的货样给我看看。”经理说。
We based our analysis on a random sample of more than 200 males.
我们把我们的分析基于二百多名男性的一组随机抽样。
The survey used a random sample of two thousand people across the Midwest.
这项调查使用的是对中西部地区2000人的随机取样。
There were small pieces of plastic in every sample.
VOA: special.2009.09.22
You've got a sample of it on your handout.
你们手上的讲稿里有一份这首诗。
One is in the U.S.at the Centers for Disease Control, where there is a sample of variola, which is kept, you know, frozen on ice in a heavily guarded facility.
一个在美国的疾病控制中心,那有一支天花病毒的样本,冰冻后置于重重保护之下
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