He made every effort to smooth out his habitual worried look and wear a sunny smile, since a happy expression can lead to genuinely happy feelings.

他努力消除他惯常的忧虑神情，脸上挂着灿烂的笑容，因为快乐的表情会带来真正快乐的感觉。

youdao

I, and the Sergeant Major of the Marine Corps, will personally lead [the] effort [to implement the new policy], thus ensuring the respect and dignity due all Marines.

我和海军陆战队军士长将亲自带头努力执行这项新政策，从而确保所有海军陆战队队员应有的尊重和尊严。

youdao

For follow-on code reviews, you do not need a major guru to lead the effort, although you might have one on your team.

对于后续的代码检查，您不需要重要的行家去领导该工作，尽管您的团队中可能有这样一位行家。

youdao

In nineteen ninety-three, Francis Collins was named to lead the genome effort.

VOA: special.2010.03.23

But the president also said the United States will lead an international effort to bring more civilian assistance to Afghanistan, to train the country's new security forces and to improve security for the Afghan people, partly by sending more U.S.troops.

VOA: standard.2009.03.27

And who should lead that effort? PEW Vice President for Policy Analysis and the report's co-author, Stephen Seidel,says the federal government should lead, as the nation's largest landowner and the guardian of its natural resources, national parks and highways, bridges and dams.

VOA: standard.2010.06.14

Point two is, there is broad agreement that there is going to be a transition to a different kind of command structure and that the United States is not going to lead that effort, and that our allies and partners are going to take the lead in enforcing the no-fly zone over time.

WHITEHOUSE: Press Briefing

Environmental groups and many politicians in Washington insist that the U.S. must lead the effort to develop renewable energy sources, with wind, solar and biomass being the lead components.

FORBES: Magazine Article

America will continue to lead the effort to prevent the spread of the world's most dangerous weapons.

BBC: State of the Union: Obama pledges to reignite economy