In the center,at ground level, is a round pool of water.

VOA: special.2009.05.25

Well, the energy at infinity is zero -K and the energy in the ground state is minus K.

无限远处的能量值为,而基态能量值为。

麻省理工公开课 - 固态化学导论课程节选

So, if we're talking about five different orbitals and we're talking about a ground state atom, we know that we just need to start at the bottom and work our way out up.

因此，如果我们要讨论的是,五个不同的轨道且是属于一个基态原子的话，我们知道，我们只需要从最低的轨道,开始一个一个往上找。

麻省理工公开课 - 化学原理课程节选

At times like these, we remember that the ground is not as solid and unchanging as people might like to think.

VOA: special.2010.01.12

That's correct. So her answer was, if it was a full parabola, then we know it would've been at the ground before I set my clock to 0.

她说,如果运动轨迹为一条完整的抛物线,那么它在我们所设定的零时刻之前,就已经落地了

耶鲁公开课 - 基础物理课程节选

The fighting died down at the end of the day, and Jackson's men moved back to their positions on higher ground.

VOA: special.2009.09.24

And the challenge that we gave to ourselves is can we do that packaging in such a way that lays a ground work for community learning coming out of people who got involved in looking at the experiment of knowledge updates.

我们自己面临的挑战是,究竟能否,借用技术打包,为知识更新实验的,观看者的群体学习打下,坚实的基础。

麻省理工公开课 - 媒体、教育、市场课程节选

Every year about two thousand people visit Edgar Allan Poe's grave at the Westminster Hall and Burying Ground in Baltimore.

VOA: special.2009.02.02

After crossing, the Israelites then celebrate the Passover, and that makes a strong link then to the Exodus led by Moses, also at the time of the first Passover. Moses had a vision of God at the burning bush. He was told to remove his shoes, his sandals, because he was on holy ground.

过河后，以色列人庆祝逾越节，这与,在出埃及记中的摩西有鲜明的联系，也是在第一次,逾越节摩西在燃烧的树丛中看见了上帝他被要求,脱掉鞋子，他的草鞋，因为他站在圣土上。

耶鲁公开课 - 旧约导论课程节选

It,too,is hungry. Traveling across the ground at great speed, the cat nears the area where the pig is fighting for its life.

VOA: special.2010.04.07

If you look at the ground state in two different systems -If you look at the ground state which is n equals one, think about this, if I increase the proton charge, the Coulombic force of attraction is greater.

如果你观察两个不同系统的基态,当你观察n，等于1的基态时，试想一下，如果我增加质子电荷，相互吸引的库仑力就会更大。

麻省理工公开课 - 固态化学导论课程节选

This is because oil well fires are extinguished,or put out, at the wellhead just above ground.

VOA: special.2009.03.22

So if we go to the ground state, what you see is we're at that lowest energy level, and we only have one possibility for an orbital, because when n equals 1, that's all we can do.

如果我们在基态上，你可以看到，我们在能量最低的态上，只有一种，可能的轨道，因为n等于1，只有这种可能。

麻省理工公开课 - 化学原理课程节选

He went there to make a speech at a ceremony establishing a military burial ground.

VOA: special.2009.11.12

When does it hit the ground and at what speed?"

该物体何时落地,落地速度是多少

耶鲁公开课 - 基础物理课程节选

Next to the burial ground is the Defense Department headquarters at the Pentagon.

VOA: special.2009.05.25

The ionization energy must then be nothing more than, that is the energy to go from the ground state here to n equals infinity, so that would be the energy at state infinity minus the energy of the ground state.

这个电离能一定不会大于，从基态到n为无限大时的能量,而是等于,无限远处的能量减去基态能量。

麻省理工公开课 - 固态化学导论课程节选

At night, Babe would make noises and hit the ground with his feet.

VOA: special.2009.01.24

So, for example, we could talk about the n equals 2 state, so that's this state here, and it's also what we could call the first excited state. So we have the ground state, and if we excite an electron into the next closest state, we're at the first excited state, or the n equals 2 state.

例如，我们可以考虑n等于2的状态，它在这里，它也被称作是第一激发态,我们有基态，如果我们把一个电子,激发到它最近邻的态,那就是第一激发态，或者n等于2的态。

麻省理工公开课 - 化学原理课程节选

He blew his breath at them. The insects fell to the ground,dead.

VOA: special.2009.05.30

The two Americans were working at the Aberdeen Proving Ground in Maryland.

VOA: special.2010.02.09

"But the actual negotiations of the loan conditions on the ground is done by technocratic economists, staff members at the IMF, and they're going to continue to do their job."

VOA: special.2011.05.20

Another American,Jerry King, was on the ground at his U.S.base in England, helping to load planes with paratroopers and supplies.

VOA: standard.2009.06.02

Other gun owners openly showed their weapons as they stood at the border of Washington on Virginia ground.

VOA: standard.2010.04.19

Spokesperson David Epstein says the ash,which is drifting at an altitude of almost 10 kilometers, could be harmful when it hits the ground.

VOA: standard.2010.04.16

Today,a few blocks up from the Boll Weevil Statue, conveyor belts carry rivers of peanuts to be cracked and ground at the Sessions Company.

VOA: standard.2010.08.10

At the same time, two ground-launched missiles narrowly missed an Israeli passenger jet leaving Mombassa's airport.

VOA: standard.2009.09.15

"But if you look at it carefully, you find that granite contains quartz, and quartz when its ground to a fine powder and inhaled, can cause silicosis."

VOA: standard.2010.07.26

Some of the world's most powerful leaders, along with their finance chiefs are meeting at London's ExCel Center to try to forge common ground on tackling the world's economic crisis.

VOA: standard.2009.04.02

Dr.Craig Smith,the chief executive of Electro Optic Systems, says laser beams fired from the ground could protect astronauts and satellites by targeting space junk that travels at potentially devastating speeds.

VOA: standard.2010.07.24