balance of export and import

例句：

1. 1. The teacher asked the studentsto balance their books on their desks.
   老师要求学生们把书放在桌子上保持平衡。
2. 2. The two teams are in a stateof equilibrium, with neithergaining nor losing much ground.
   两队处于一种平衡状态，双方都没有取得太多优势或劣势。
3. 3. The new policy aims to balancethe economy between growth and stability.
   新政策旨在在增长和稳定之间找到平衡。