毕竟，在许多国家和文明中，这三种形式的进步是并存的。

After all, these three forms of progress have gone together in a number of states and civilizations.

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如果你仔细观察，你会发现这是三种不同形式的碳的混合物。

If you look more carefully, you will find that this is a blend of three different forms of carbon.

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妊娠期糖尿病是第三种主要形式。

Gestational Diabetes is the third main form.

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But, if you look more carefully, you will find that this is a blend of three different forms of carbon.

但是，如果你们再认真一点，会发现,它是三种形式的碳的混合物。

麻省理工公开课 - 固态化学导论课程节选

I think they were just a succession of dings but I'm hearing it-- my mind wants to hear this organization So there's another organization here of units of three.

我想它们就是一组连续的,叮,但我听到的是这样的,我的大脑希望听到这样的组织方式,那么这里还有另外一种三拍一组的形式

耶鲁公开课 - 聆听音乐课程节选

But what is a regime? Broadly speaking a regime indicates a form of government whether it is ruled by the one a few the many or as more common some mixture a combination of these three ruling powers.

但到底何谓政体？广义来说,政体象征着一种形式的政府,无论它独裁，寡头或多头掌政,或是更常见的混合体,综合上述三种统治权力。

耶鲁公开课 - 政治哲学导论课程节选