overlapping part

例句：

1. 1. The engineer designed the machine to have an overlapping part that could be easily replaced.
   工程师设计的机器有一个可以容易更换的重叠部分。
2. 2.The team worked together to ensure that all parts of the project were overlapping correctly.
   团队共同努力，确保项目的所有部分都正确重叠。
3. 3.The researcher found that the overlapping parts of the two machines could be combined to improve efficiency.
   研究员发现，两台机器的重叠部分可以被结合使用，以提高效率。