中， ちゅう
1. medium (size), average (grade, level, etc.), middle
2. in, within, out of (e.g. ten people), among
3. during, while, in (the course of), within (a period), throughout
4. currently (doing), in the process of, in the middle of, under (e.g. construct...
目前(正在进行中)、处于过程中、正处于……之中、在……(例如：建设、调查)进行中