volume velocity

例句：

1. 1. The volume of the book is 200 pages.
   这本书的页数是200页。
2. 2. The volume of the data is too large to be processed in a day.
   数据量太大，一天内无法处理。
3. 3. The volume of the music was so loud that it drowned out the sound of the crowd.
   音乐声太大了，盖过了人群的声音。