New Words：

volume ['vɔljum] n. 体积；容量；卷；音量

Sample Sentences：

The volume of this container is 20 cubic meters.
The television is too loud; turn the volume down.
The volume of business with Japan has increased.
For that article he has worked over some 30 volumes of Chinese history.

business [ˈbɪznəs] n. 商业；商务；生意；买卖

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