The Gemini astronauts were developing the control that would be needed for a trip to the moon.

VOA: special.2009.06.24

So, for example, if we needed to figure out the electron configuration for titanium, 4s2 it would just be argon then 4 s 2, 3d2 and then we would fill in the 3 d 2.

所以举个例子,如果我们需要解出钛的电子构型，它会是Ar然后，然后我们填充。

麻省理工公开课 - 化学原理课程节选

But the changes that would be needed to carry astronauts are costly and untried.

VOA: special.2010.04.28

If that passes,then a compromise would be needed with the House version.

VOA: special.2009.11.13

They would be needed to defend their own capital.

VOA: special.2009.09.17

A large army and navy would be needed.

VOA: special.2010.07.22

He said if North Korea would not conform to international norms, "painful" sanctions would be needed to end the nuclear program.

VOA: standard.2009.05.30

The report,Promoting Development, Saving the Planet,said that up to $1 trillion a year would be needed to deal with issues of climate change in the future.

VOA: standard.2009.09.01

The Education for All Global Monitoring Report says an additional $16 billion in annual funding would be needed to achieve universal primary school education by 2015.

VOA: standard.2010.05.19

The president spoke one day after the top U.S.military officer, Navy Admiral Michael Mullen, the Chairman of the Joint Chiefs of Staff,said more U.S.troops probably would be needed in Afghanistan.

VOA: standard.2009.09.16

General Fonseka,in the letter, says Sri Lanka asked India on October 15 to place troops on alert in case they would be needed to intervene to foil a coup on the island.

VOA: standard.2009.11.14

After returning from a trip to Afghanistan, Senator Daniel Inouye, who heads the powerful Senate Appropriations Committee, issued a statement this week appearing to support the request by General McChrystal for more troops, although Inouye said more discussion would be needed before any final decision on troop levels is made.

VOA: standard.2009.10.15

Scientists say more information is needed before they can be sure that painting roofs white would help battle rising temperatures.

VOA: special.2010.03.02

The new launch vehicle would be used to carry the supplies and equipment needed to explore space beyond the moon.

VOA: special.2010.04.28

He said military force would not be needed.

VOA: special.2009.06.04

"It would be unethical for us to turn our back on these people and not conduct the research that is so desperately needed to develop the drugs to treat these diseases and the vaccines to prevent them in the future."

VOA: standard.2010.02.16