volume of current

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 single session.
   数据量太大，无法在一个会话中处理。
3. 3. The volume of the ocean is estimated to be around 1.5 billion cubic kilometers.
   海洋的体积估计为150亿立方公里。