The new proposals have roots in disputes involving two companies.

VOA: special.2009.09.25

But at the same time, as Darwin well knew, emotions have universal roots that are shared across all humans and across many animals.

但同时，正如达尔文所说，情感在全球是相通的,被所有的人类和动物共享。

耶鲁公开课 - 心理学导论课程节选

There you have the roots and the kernel of the so-called "Positive good thesis "About slavery.

这样你就有了奴隶制,所谓"积极的一面"的根源和依据

耶鲁公开课 - 美国内战与重建课程节选

Eradicating weeds means that you have to remove all the seeds and roots so the plants will not grow back.

VOA: special.2010.08.10

This move roots Frost's poetry of work in the lives of rural workers, people who have to sustain and entertain themselves, often on their own or alone.

这运动将弗罗斯特的诗歌扎根进,乡村工人的生活中，扎根进必须独自，支撑和娱乐他们自己的人中。

耶鲁公开课 - 现代诗歌课程节选

The roots of the plant may have to grow several meters deep to reach groundwater.

VOA: special.2010.07.13

So trees are actually able to grow on rocks. They have very strong roots."

VOA: special.2010.07.13

When that keeps happening, the roots do not have enough time to recover.

VOA: special.2010.01.19

Many Chicago neighborhoods have ethnic roots in Poland, Germany, Ireland and Italy.

VOA: special.2009.01.12

Bare-root plants have no soil on their roots.

VOA: special.2009.03.03

Opponents have already spent millions of dollars on television ads aimed at whipping up grass-roots opposition to the Obama plan.

VOA: standard.2009.07.31

"Yes sir,it is," "It is very personal. These organizing groups have given people, normal grass roots people,a voice.

VOA: standard.2009.07.31