当所有这些因素放在一起，并且由经济学家计算得出这些数字时，它最终的净值是正数，但只是一个很小的数。
When all those factors are put together and the economists calculate the numbers, it ends up being a net positive, but a small one.
这是一个很大的数，所以这边总的来说是正数。
And there's a bigger number than this, so it's a positive number overall.
不同于实数——平方之后无论正负都是正数，负数开平方因此得到了“虚”数之名，并为许多人轻视。
Since both negative and positive Numbers, when multiplied by themselves, give positive answers, such Numbers were labelled "imaginary", and regarded by many as meaningless.
亲爱的，你是正数，我是负数，我们都是有理数，真是天生的一对啊！
My dear, you are positive, I was negative, we are all rational numbers is really a natural pair ah!
亲爱的，你是正数，我是负数，我们都是有理数，真是天生的一对啊！
My dear, you are positive, I was negative, we are all rational numbers is really a natural pair ah!
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