carpenter's trying plane

例句：

1. 1.The engineer used the trying plane to test the new design.
   工程师使用试验锯来测试新设计。
2. 2. The pilot was trying a new plane for the first time.
   飞行员第一次尝试了一架新飞机。
3. 3. They used the trying plane to make sure the machine worked properly.
   他们使用试验锯来确保机器正常工作。