研究人员正在改进衡量教师全年表现的系统，并且通过三年的数据，通常可以判断出哪些教师表现不佳。

Researchers are improving systems to measure a teacher's performance throughout the year, and, with three years of data, it's usually possible to tell which teachers are failing.

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张艺谋的最新电影，《山楂树之恋》，描绘了女教师静秋和地理学者老三之间的纯洁爱情。

Zhang Yimou's latest film, "Under the Hawthorn Tree, " depicts the innocent love between a teacher, Jing Qiu, and a geologist, Lao San.

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在马萨诸塞州，托儿中心必须为每三个婴儿聘请一名教师，其年均护理费用超过1.6万美元。

In Massachusetts, where childcare centers must hire one teacher for every three infants, the price of care averaged more than $16,000 per year.

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