balance whip pin

例句：

1. 1.The weight of the scales is balanced by the weight of the other side.
   秤的两边重量相等，达到平衡。
2. 2.The teacher tried to balance the class by assigning different tasks to each student.
   老师试图通过分配不同的任务给每个学生来平衡班级。
3. 3. The two teams fought for balance in the game, with neither gaining an advantage.
   两队在比赛中争夺平衡，都没有取得优势。