Competition can be a motivator, and sometimes can be a lot of fun.

竞争是一种激励，有时还很有意思。

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Using criticism as a motivator is, in fact, a common trait I have found among many self-made billionaires.

事实上，化非议为动力——我发现，这是很多白手起家的亿万富翁的共同点。

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The delivery date ACTS as a motivator to ensure that everyone on a project is aiming at the same target.

交付日期作为激励因素，确保项目中的每个人都针对相同的目标。

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Mr.Ravalomanana said the prospect of losing that badly needed cash had been a strong motivator in reaching what he called a miracle deal.

VOA: standard.2009.11.08

Yet, as the pages ahead show, profit can be as powerful a motivator as God.

NPR: Tracking the World's Black Market: 'Illicit'

The "increasingly sectarian nature" of the fighting is a motivator for proxy groups fighting in Syria.

CNN: Syrian fight now 'overtly sectarian,' U.N. says

Feeling good about how you did your job may have been a motivator for you.

FORBES: You're Never Too Old To Start Working Out