This will remove air pockets and help the sod make contact with the ground and take root.

VOA: special.2009.07.07

Now, if this incident energy is great enough it will take an electron out of the ground state and promote it.

现在，如果入射能足够的话,它会将一个电子从基态中释放出来,并且加速它。

麻省理工公开课 - 固态化学导论课程节选

Clearly, if I take a chalk like this one here, and I throw it on the ground, and it breaks in little pieces, if I run the movie backwards that doesn't make sense, right?

很清楚，如果我拿一支这样的粉笔，把它扔到地上，它会摔成碎片，如果我们把这个场景倒过来放映,那是没有意义的，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Some of our young guys got to take batting practice and take ground balls with some of the greatest players in the world, and that can really help them.

WSJ: WBC players look to sustain success

And the president appointed Lieutenant General David Petraeus to take over ground forces in Iraq.

NPR: Bush Expected to Announce Increase of Troops

It's absolutely futile if you take the ground at considerable cost... then actually just withdraw because you haven't got the manpower to hold the ground.

BBC: Deaths not halting success - PM