method of determining yield by volume

例句：

1. 1.The method of solving this problem is to divide it into smaller parts.
   解决这个问题的方法是将问题分成更小的部分。
2. 2. This method has been proven to be effective in many cases.
   这种方法在许多情况下已被证明是有效的。
3. 3.The teacher demonstrated the method step by step.
   老师一步一步地演示了这个方法。