five-point jack

例句：

1. 1.The construction worker used a five-point jack to lift the heavy beam.
   建筑工人使用五点式千斤顶来抬起沉重的梁。
2. 2. The carpenter used a five-point jack to adjust the height of the roof.
   木匠使用五点式千斤顶来调整屋顶的高度。
3. 3.The engineer used a five-point jack to test the strength of the concrete beam.
   工程师使用五点式千斤顶来测试混凝土梁的强度。