(OMITTED) Senators John McCain and Jon Kyl of Arizona announced a plan to step up border security, including a request for 3,000 National Guard troops along the Arizona-Mexico border.

VOA: standard.2010.04.21

Here's a, actually here it did take 25 years, but they did, they did eventually step on before we started drinking 7-Up.

这个过程，这个过程真的花了二十五年的时间，但是他们做到了，他们在我们喝七喜之前制止了加锂的行为。

麻省理工公开课 - 化学原理课程节选

And if you hear a triple, your step is this: down-up-up, down-up-up, down-up-up, down-up-up.

听到三拍子时,这样做,强,弱,弱

耶鲁公开课 - 聆听音乐课程节选

So, anyway, that writing--let me back up a step.

好吧,那些文字...我们先从早的开始说

耶鲁公开课 - 古希腊历史简介课程节选

So, we start on C and then we go up to D-- a whole step.

我们从C开始,然后上升到D,一个全音级

耶鲁公开课 - 聆听音乐课程节选