总之，如果没有一种新的可持续提供动力并且可移动的能源，就没有新机械化时代的产生。
The new age of machinery, in short, could not have been born without a new source of both movable and constant power.
总之，如果没有一种新的可持续提供动力并且可移动的能源，就没有新机械化时代的产生。
The new age of machinery, in short, could not have been born without a new source of both movable and constant power.
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