But human rights groups say the United States must do more to help protect women and girls in developing countries.

VOA: special.2009.10.24

It must struggle against events which would help to achieve its goal too rapidly--by a kind of short-circuit.

它会在危险中挣扎,因为危险会太早把它带到终点。

耶鲁公开课 - 文学理论导论课程节选

And,the FBI must believe that wide publicity about the criminal might help lead to an arrest.

VOA: special.2010.05.05

They also say rich countries must make financial pledges to help developing countries deal with the changes brought by climate change.

VOA: standard.2009.11.06

He says that the country's top echelon must be aware that their words and actions help those who are acting against the nation.

VOA: standard.2009.07.20

"Presidents Bush and Clinton will help the American people to do their part, because responding to a disaster must be the work of all of us.

VOA: standard.2010.01.16

"Democrats and Republicans must still work together to make health care more affordable, invest in renewable energy and help all people in America to get an education.

VOA: standard.2009.04.28