There are fast trains, slow trains, trains that go under the ground, and trains that go through mountains.

这儿有快车，慢车；还有地下火车和穿山火车。

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Then the question is: how fast or how slow will the recovery be?

VOA: special.2009.08.21

The paradox then is how do you create such a fast computer with such slow stuff?

那么这里的悖论就是,你是如何用传输如此缓慢的材料,制造出反应如此迅速的计算机的

耶鲁公开课 - 心理学导论课程节选

in atomic hydrogen, is it fast? Is it slow?

在氢原子里，速度是快还是慢？

麻省理工公开课 - 固态化学导论课程节选

Crossing context and culture helps you decide whether to Assimilate, Converge and Evolve (fast or slow), or Shock.

FORBES: Connect

Have you ever met someone you thought was fantastic but the pace was just too fast or slow?

FORBES: Being a Good Date: The Governing Principles of Relationship Building

You can see how fast or slow their growth was, how much they had to spend on sales and marketing, and what their margins were.

FORBES: The Copy-Paste Financial Plan