moral duty

汉语翻译

例句：

1. On an occasion of this kind it become more than a moral duty to speak one's mind; it become a pleasure.
   趁这样的机会直抒己见，其意义超过了道德上的义务，而成为一种乐趣。
2. On an occasion of this kind it becomes more than a moral duty to speak one's mind; it becomes a pleasure.
   趁这样的机会直抒已见，其意义超过了道德上了义务，而成为一种乐趣。