sample characteristic value

例句：

1. 1. The engineer needs to samplethe new material before making a decision.
   工程师需要先取样再做决定。
2. 2. The companysent us a sample of their latest product.
   公司给我们寄来了他们最新产品的样品。
3. 3.The scientist collected samples from different parts ofthe forest.
   科学家从森林的不同地方收集了样本。