你会和之前开始的时候，有不同的摩尔分数。
And you'll have some different mole fraction than you started with before.
下面的文章就能看出其不同之前和之后的引入梯度。
Below, you can see the difference before and after adding gradient.
注意你的感觉在这周结束和之前有什么不同。
Pay attention to how different you feel before and after the end of the week.
但是那个聪明人的计划和之前村民们的计划不同。
But the wise man's plan was different from the villagers' plan before.
在此之前我和不同的音乐家们在乐队演奏。
Before that, I was playing in various line ups and with the band.
他告诉我之前他在内地一个中部城市丢手机的遭遇和这次完全不同。
He told me this was a very different experience from the last time he lost his phone, in a city in central China.
他告诉我之前他在内地一个中部城市丢手机的遭遇和这次完全不同。
He told me this was a very different experience from the last time he lost his phone, in a city in central China.
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