R Let this be radius r, and at this moment in time, the object is here.

这是半径，假设这时，物体在这里。

youdao

R And the track has a radius R, and at this moment in time the angle equals theta, and here is the object.

轨道半径是，在这个时刻,角度等于θ,这是物体。

youdao

We can do that -- for that is the story of human progress; that’s the hope of all the world; and at this moment of challenge, that must be our work here on Earth.

我们可以做到——因为这是人类进步的历程；这是全世界的希望；在当前面临挑战的时刻，这必须是我们在全球从事的工作。

youdao

And with this many vehicles right now C somewhere right about a thousand at this moment C we can establish that record as long as we do the things that Guinness has asked us to do."

VOA: special.2011.08.05

So it's a complex issue, and I should leave it having said this much, at least for the moment.

因此它是一个很复杂的问题，而我就讲到这里，至少暂时这样。

耶鲁公开课 - 文学理论导论课程节选

His resentment over his powerlessness within the family seethes in this moment, and he thinks of a way to get back at his father.

他讨厌自己在父亲,暴怒时的无可奈何，因而他设法去报复。

耶鲁公开课 - 1945年后的美国小说课程节选

And at this moment, the most important contest we face is not between Democrats and Republicans.

WHITEHOUSE: Education, Innovation & The Economy

And at this moment, the question is: How do we take the country in a new direction?

CNN: Transcript of Thursday's Democratic presidential debate

It was moving toward the square, and at this moment they started shooting the car with big machine guns.

NPR: Witness Testimony Sheds Light on Blackwater