It has three roots.

这种情绪有三个根源。

youdao

Cultivate this by way of the three roots, nine reasons, and three decisions.

谓应由于三种根本，九种因相，三种决断门中修习。

youdao

Because this effect has been observed in three primate species, most recently in a study of chimpanzees, it suggests this effect has evolutionary roots.

因为人们已在三个灵长类生物间发现了这种效应。最近的是在一个关于黑猩猩的研究中，它提出这种效应有进化论的根基。

youdao

Roots of Peace says a landmine costs anywhere from three to thirty dollars to produce and place in the ground.

VOA: special.2010.05.03

Many growers like to start with two to three year old roots instead.

VOA: special.2009.04.07

And I set down roots three blocks from where I grew up.

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If the roots extend past three feet, chances are good that they can support the tree.

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She sold three million copies of her book and led a grass roots movement over 25 years, that required her to be on the road continuously.

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