parallel guide

例句：

1. 1. The engineer used a parallel guide to align the parts together.
   工程师使用平行导引来对齐部件。
2. 2.The car was guided by a parallel guide that led it to its destination.
   汽车被一条平行的导引线引导，最终到达目的地。
3. 3. The scientists used a parallel guide to study the movement of the earth's magnetic field.
   科学家们利用平行导引研究地球磁场的运动。