Twelve thousand parts per million of the gas will cause death in one to three minutes.

VOA: special.2010.02.02

I'm going to write it like this three moles of hydrogen which is a gas one bar 100 degrees Celsius.

我会写成这样：,三摩尔氢分子，气体,1巴，100摄氏度。

麻省理工公开课 - 热力学与动力学课程节选

Here just two, so we changed the number of moles of gas by three. All right, how much did it matter, right?

所以我们将气体的摩尔数,改变了3摩尔，好，它会起多大作用？

麻省理工公开课 - 热力学与动力学课程节选

Companies are developing gas supplies trapped in shale rock two to three thousand meters underground.

VOA: special.2009.10.23

Now going from three to four right, so we have another isothermal process for an ideal gas, so I won't try to make you sing again so soon.

从第三点到第四点，这也是一个理想气体的,恒温过程，这次不用你们集体回答了。

麻省理工公开课 - 热力学与动力学课程节选

Terre'Blanche served three years in prison after being convicted in 2001 of assaulting a gas station worker and a security guard, both of whom were black.

VOA: standard.2010.04.05

In the past few months, the cost of wheat and sugar has more than doubled they say, and cooking gas, in constant short supply, can cost three times as much as it did a few months ago.

VOA: standard.2010.04.20

It is not clear what it will be able to do to help revive energy talks with Uzbekistan, Kazakhstan and Turkmenistan, During negotiations in the Czech capital,Prague, the three natural-gas producing nations were not convinced by E.U.offers of more trade and stronger transport links in exchange for their participation in a multi-billion-dollar gas pipeline, known as Nabucco.

VOA: standard.2009.05.11