spacing impulse

例句：

1. 1. The two books have a considerable spacing between them.
   这两本书之间有相当大的间隔。
2. 2. The teacher asked the students to maintain a good spacing in their writing.
   老师要求学生们在写作时保持适当的间距。
3. 3. The car was parked at a safe spacing from the building.
   汽车停在离大楼安全距离的地方。