同学你好，该知识点来自沪江网校《大学水平直达CATTI二级（笔译+口译）【三年畅学开学季专享班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
mankind：You can refer to all human beings as mankind when considering them as a group. Some people dislike this use.
human：a person rather than an animal or a machine
mankind更适合表达人类，同学要替换的话，可以用human beings
has made great contributions to human beings' common prosperity
其他翻译部分是ok的哦~
希望对同学有帮助~