Although direct user activity to this archive server is low, the volume of data involved is fairly large.
尽管该归档服务器的直接用户活动率很低，但涉及的数据量相当大。
2
Database migration is a comprehensive activity as the volume of changes required might be huge.
数据库迁移是一种复杂的活动，因为可能需要做大量修改。
3
One is an immersive gripping interactive activity, and the other is the kind of thing where the volume and velocity and pacing allows for interruption and Shared attention.