balance quality grade

例句：

1. 1.The scales must be balanced for the weight to be even.
   秤必须平衡，才能称出重量。
2. 2.We need to balance our workload with our personal life.
   我们需要在我们的工作和个人生活之间找到平衡。
3. 3. The company is trying to balance its profitability with sustainability.
   该公司正在努力在盈利能力和可持续性之间找到平衡。