For decades, efforts to improve math skills have driven schools to embrace one math program after another, abandoning a program when it does not work and moving on to something purportedly better.

数十年来，为了提高数学技能，学校尝试了一个又一个数学课程，放弃一个不起作用的课程，又转向某个据说更好的课程。

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Adapting to personality types at work need not mean abandoning your principles.

在工作中适应个性不同的人不一定意味着放弃你的原则。

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But last night, the company announced that, after spending hundreds of millions of dollars on embryonic stem cells, it was abandoning the work for business reasons.

FORBES: Stem Cell Innovator James Thomson Says Geron Blazed Trail For Others To Follow

This field is slowly gaining steam just as Geron is abandoning stem cell work.

FORBES: Stem Cell Innovator James Thomson Says Geron Blazed Trail For Others To Follow

Furthermore, most Yemenis knock off work at 2pm, abandoning their afternoons to chewing.

ECONOMIST: Chewing through a Yemeni afternoon