The idea is for a "duet system, " where a video expert teaches in tandem with the classroom’s own teacher.
这样是为了形成一个“二重奏系统，”即制作视频的专家和教师结合。
2
Apple can get an added performance boost by designing its processor and its operating system in tandem so that they are optimized for each other.
通过同时研发自己的处理器和操作系统，二者的契合得以优化，从而使Apple的产品性能更加卓越。
3
I'm not completely against the idea of a 'Publish to RubyForge' button, but if I'm being perfectly honest, I'd prefer just making our system work in tandem with their site.