多数人自以为了解质量是怎么一回事，但是他们其实只知其一、不知其二。

Most people think they know what mass is, but they understand only part of the story.

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你们中国人有一句古话‘只知其一，不知其二’。

You Chinese saying goes' only know one, I do not know the other '.

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你们中国人有一句古话‘只知其一，不知其二’。

You Chinese saying goes' only know one, I do not know the other '.

youdao