But in the official International System of Units, we use Joules.

但在正式的国际单位制中， 我们使用焦耳。

For example, did you know that the International System of Units only includes seven base units and every other unit is derived from those units?

例如，您是否知道国际单位制仅包含七个基本单位， 而其他所有单位均源自这些单位？