其一是关于评估，其二是关于估价。
如果你不知其一，往往也不能知其二。
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.
其一是注重良知，其二是心怀善意。 。
One eis attention to conscience; the other is a spirit of good will.
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 '.
我想要说两点，其一关乎智慧，其二关乎道德。
I should like to say two things, one intellectual, and one moral.
选题的动因大抵有两种，其一是兴趣；其二是角色要求。
The selected topic agent generally speaking has two kinds: interest and role request.
其一是我们自己精通的问题，其二是我们知道在哪里可以找到关于某问题的知识。
We know a subject ourselves, or we know where we can find information upon it.
我们之所以使用碳转，其一：价格低廉；其二：不会像金属导体熔化。
Carbon is used since it is inexpensive and will not melt like a metal conductor.
我们之所以使用碳转，其一：价格低廉；其二：不会像金属导体熔化。
Carbon is used since it is inexpensive and will not melt like a metal conductor.
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