But now a new study by a marketing professor in Canada backs it up a step and seeks to understand how word of mouth affects the attitudes of the teller.

不过，加拿大一位营销学教授在日前进行的一项新研究使口碑的研究上了一个新台阶，他试图了解口碑是如何影响评论者的态度的。

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He had told a friend, "You come to realize that life is short, and you have to step up.

VOA: special.2010.02.07

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

The message I'm trying to get to here, because I'm running you right up against time, is I have to be careful about what's a primitive step.

我想说的事情是，因为我正在跟大家讲算法时间复杂度，我们需要注意一个基本步骤的定义,如果我可以假设。

麻省理工公开课 - 计算机科学及编程导论课程节选

It seemed to be biting deeper, which was reassuring as I moved up a step in my aider, a webbing ladder used to ascend Big Walls.

WSJ: Training for the Big Wall | By Michael J. Ybarra

Plus, because small investors must follow the action through news headlines and public filings, they typically end up a step behind professional investors, says Harold Bierman, a Cornell University professor.

WSJ: In Bidding Wars, Retail Investors Can Get Caught in the Crossfire

"We now have leapt up a step to become a space-power nation, " he said, adding that South Korea would use this "overwhelming moment as a strong, dynamic force" to help drive an independent space programme.

BBC: South Korea launches space rocket carrying satellite