test at high attack angle

例句：

1. 1. The engineer tested the new machine before it was put into use.
   工程师在机器投入使用前对其进行了测试。
2. 2. The scientists conducted a test to determine the effectiveness of the new drug.
   科学家们进行了一项测试，以确定新药的有效性。
3. 3. Before taking a test, make sure you have all the necessary materials.
   在考试之前，确保你有所有必要的材料。