intermediate improvement cutting

例句：

1. 1. The engineer made a mid-term improvement in the design of thenew machine.
   工程师在新型机器的设计上进行了中期改进。
2. 2. The team decided to make anintermediate improvement to their training program.
   团队决定对他们的训练程序进行中间改进。
3. 3. The researcherconducted an intermediate improvement on the existing methodfor analyzing chemical compounds.
   研究者对现有的分析化学化合物的方法进行了中间改进。