not compulsory meaning in English
可自由选择的
Examples
- Higher education is not compulsory education any more
高等教育已不再是义务教育了。 - Attendance at evening prayers is not compulsory
参加晚祷并非硬性规定 - Voluntariness : mediation should be voluntary , not compulsory
自愿性质：调解应为自愿，而非强制。 - " this is not compulsory and in the uk messages are written rather than recorded on video
“这并非强制性的，在英国人们更愿意写封短信，而不是录像。 - The opponents piece then is removed from the board , and out of play for the rest of the game . ( taking is not compulsory
对方的棋子将从棋盘上拿掉，且在以后的游戏中不起作用。