He tells these teenagers the key to being an astronaut is having a solid background in math and science.

VOA: standard.2010.02.02

It's a core of heavily armed infantrymen in a solid block.

是以重型装甲步兵为核心组成的坚固方阵

耶鲁公开课 - 古希腊历史简介课程节选

If you have a large number of atoms in an aggregate, it is going to require that the substance turn solid and condense at room temperature.

如果有很多原子进行聚集，在室温下,会使的物质转变成固体状态。

麻省理工公开课 - 固态化学导论课程节选

Arkansas,Florida and Texas schools, on the other hand, are lagging behind in giving their students a solid science foundation.

VOA: standard.2009.11.25

Let's take salt, solid, and dissolve it in a bunch of liquid water.

我们把食盐晶体，溶解在一些水中。

麻省理工公开课 - 热力学与动力学课程节选

In fact,it's been a very solid relationship,".

VOA: standard.2009.12.12

So, these are all the fundamentals that are involved in chemistry that relate to physical chemistry, organic chemistry, inorganic chemistry, biological chemistry, and are a solid foundation for studying any kind of life science.

所必须知道的最基本的化学知识,这些都是和物理化学,有机化学，无机化学，生物化学有关的基础知识,也是学任何生命科学的基础。

麻省理工公开课 - 化学原理课程节选

"I don't think I would say he is free of cancer. I would say that he is in what we call a solid partial remission which means that the majority of the cancer cells have disappeared,"

VOA: standard.2010.01.12

If I have Avogadro number of these things in a long line, you can bet it is going to be a solid.

如果在一条直线上,这些东西有阿伏伽德罗常数那么多，你肯定会说它是固体。

麻省理工公开课 - 固态化学导论课程节选

But at the same time,Admiral Mullen, who is Chairman of the Joint Chiefs of Staff, expressed confidence that with a solid Afghan partner, an increase in U.S.forces can bring a measure of security and stability to Afghanistan within a few years, as the 2007/2008 "surge" helped provide an opportunity for Iraq to move forward in a more secure environment.

VOA: standard.2009.11.04

Now, I know you've had all this bonding in the orientation period, but I think that it's much better when you write a test for there to be some solid state defects known as vacancies in between the various people.

现在，我知道你们关系很融洽,在互相介绍的时间里，但是我想这样会更好,当你们在一起做一个测试,成为固体化学的不良产品,成为众多人当中的缺位。

麻省理工公开课 - 固态化学导论课程节选

And the triple point of water is 16K that temperature and pressure - there's a unique temperature and pressure where water exists in equilibrium between the liquid phase, the vapor phase, and the solid phase.

与水的三相点,我们定义它为273。,水的三相点,是一个特定的温度和压强,可以使水的液态，气态和固态三相共同达到平衡，三相点是液态。

麻省理工公开课 - 热力学与动力学课程节选