balance plough

例句：

1. 1.The teacher asked the students to balance their books on their desks.
   老师要求学生们把书放在桌上保持平衡。
2. 2.The farmer balanced his crop against the market price.
   农民根据市场价来平衡他的庄稼。
3. 3.The team tried to balance their offense and defense.
   球队试图平衡进攻和防守。