sample of existing goods

例句：

1. 1.The company sent out a sample of its new product to test the market response.
   该公司发送了新产品的样本以测试市场反应。
2. 2.The scientist collected samples from different locations for further analysis.
   科学家从不同地点收集样本以便进一步分析。
3. 3. Samples were taken from the river for testing the water quality.
   从河中取样以检测水质。