cross-country samples

例句：

1. 1. The study collected data from a wide range of countries to analyze trends across different regions.
   这项研究收集了来自多个国家的数据，以分析不同地区的趋势。
2. 2.The company is interested in cross-country samples to test its product's performance in various environments.
   该公司对跨国家样本感兴趣，以测试其产品在不同环境中的性能。
3. 3. To ensure the accuracy of their research, they used cross-country samples to compare results across different regions.
   为了确保他们的研究的准确性，他们使用了跨国家样本来比较不同地区的结果。