同学间缺乏沟通和交流用英语怎么说

这句话可以说成“Lack of communication and interaction among classmates.”。
其中，“Lack of”是“缺乏”的意思，“communication”是“沟通”，“interaction”是“交流”。
例句：
The lack of communication between team members led to the project's failure.
缺乏团队成员之间的沟通导致了项目的失败。
The students complained about the lack of interaction in the classroom.
学生们抱怨课堂上缺乏交流。
The lack of communication and interaction among the group members caused the project to be delayed.
群体成员之间缺乏沟通和互动导致了项目的延迟。