In the study, researchers tested curcumin, a chemical compound taken from turmeric.

VOA: special.2010.06.01

Delta H of formation means the enthalpy of this compound minus the enthalpy of its constituent elements in their most stable state at room temperature and pressure.

生成焓就是这种组分,的焓减去它的所有组成元素,在室温和常压下处于,其最稳定的状态时的焓。

麻省理工公开课 - 热力学与动力学课程节选

Just so that we are clear, this is the bond in this compound.

所以我们明白，这是化合物中的共价键。

麻省理工公开课 - 固态化学导论课程节选

Mr.Obama was in the senator's home state when he died not far from the Kennedy compound in Hyannis Port,Massachusetts.

VOA: standard.2009.08.26

But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.

但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像，很多药物的制造过程中都会用到亚硫酰氯，因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。

麻省理工公开课 - 化学原理课程节选

Army spokesman Major-General Athar Abbas says that commando forces immediately surrounded the compound in an effort to secure the safe release of the hostages.

VOA: standard.2009.10.11

The killing of the British personnel by a lone Afghan policeman at a military compound in Helmand province has raised more questions in Britain about the deployment.

VOA: standard.2009.11.04

Two vehicles entered and then exploded in the African Union peacekeeping force compound, sending a heavy trail of black smoke into the skyline of the capital city.

VOA: standard.2009.09.17

Fans continued to offer tributes to the man called the King of Pop outside the singer's rented home and at the Jackson family compound in another part of the city.

VOA: standard.2009.06.26

On Tuesday an important recovery by Mexican rescue workers: the body of the Roman Catholic Archbishop of Haiti, Monsignor Joseph Serge Miot, found sitting at his desk in the Catholic compound.

VOA: standard.2010.01.20

U.S.Special Envoy George Mitchell arrived in Israel as tensions simmered between Palestinians and Israelis over access to the Temple Mount, or Noble Sanctuary, compound in Jerusalem that houses sites holy to both Jews and Muslims.

VOA: standard.2009.10.08

Among the dead is the top An eyewitness at the Mogadishu airport, which is situated next to the AMISOM base, says the two cars entered the compound and then exploded near the petrol station located in the base.

VOA: standard.2009.09.17

"We have to make sure that the compound will be sufficiently efficacious to be used in the clinical setting, it has to be safe, and again we can make the drug sufficiently cheaply that it will be appropriate for the use in the clinical setting."

VOA: standard.2010.04.05