Sometimes fast and sometimes slow.

有时候快，有时候慢。

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Sometimes fast and sometimes slow.

有时感觉快，有时感觉慢。

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Every four years, the impact of the World Cup has been subtle and sometimes slow to emerge.

四年一届的世界杯的影响是微妙地、有时是缓慢地显现的。

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Sometimes we can't help but slow down because everybody is slowed down in front of us, we have no choice.

有时我们不得不慢下来因为前方,每个人都已减速，我们别无选择。

耶鲁公开课 - 政治哲学导论课程节选

Let me just give some example of-- sometimes people are very slow to see the obvious, or it seems so in history.

我来举些例子-,有时人们对显见之物的反应反而比较滞后，起码从历史上来看是这样的。

耶鲁公开课 - 金融市场课程节选

In the sometimes slow moving world of conventional business, price collapses may crash your margins and profits.

FORBES: Magazine Article

But Waller said it's the recognition of what the Nobel panel called the "incalculable value" of his agency's work that helps when employees are having a hard time with their sometimes slow, frustrating work.

CNN: Laureates to Nobel winners: Prepare for 'lightning bolt'

American Express and Honeywell, two major Dow components, posted earnings after the bell on Wednesday, both of them beating consensus EPS estimates on rising revenues pointing to a continued, albeit sometimes slow, economic recovery.

FORBES: American Express' Rising Costs Spook Investors As Honeywell Impresses