tandem
noun [ C ] uk/ˈtæn.dəm/ us/ˈtæn.dəm/
双人自行车
a bicycle made for two people who sit one behind the other
Idiom
in tandemidiom 同时
at the same time
The heart and lungs will be transplanted in tandem. 将同时移植心脏和双肺。
协同地，联合地
If two pieces of equipment, people, etc. are working in tandem, they are working together, especially well or closely.
I want these two groups to work/operate in tandem on this project. 我希望这两个小组联合做这个项目。