The length of time to press sweeping changes.

按住的时间长短有力度变化。

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It made the evolution of the tractor possible, and led to sweeping changes in agriculture.

它使拖拉机的改进成为可能，并引领了农业的彻底变革。

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It made the evolution of the tractor possible, and led to sweeping changes in agriculture.

它使拖拉机的改进成为可能，并引领了农业的彻底变革。

youdao