他开始用一种纯粹的形式和形状看人。

He began to see people in simple forms and shapes.

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印象主义将绘画回归到本源，并强调纯粹的形式与纯粹的颜色。

Impressionism stripped painting back to its roots, restoring the emphasis on pure form and pure colour.

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因此，关于在跑步中如何着地的问题，应以最纯粹的形式再次被提出。

So the question of how to land in running popped up again in its purest form.

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