test direction team

例句：

1. 1. The scientist tested the new drug on a small group of patients.
   科学家在一小群患者身上测试了这种新药。
2. 2. Before taking a test, make sure you understand the directions.
   在做测试之前，确保你理解了指南。
3. 3. He tested the water for contamination before drinking it.
   他在喝之前测试了水是否被污染。