Another line of evidence cited by marketers comes from studies of elderly people who improve certain skills by practicing a challenging computer-based task.

商家提出的另一项证据是，有研究表明，通过完成一项富于挑战的电脑游戏任务，老年人的某些技能有所提高。

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In the first semester, we run an eight-week conversation class for students of non-English-speaking backgrounds, who wish to improve their fluency, grammar and pronunciation in English.

在第一学期，我们为非英语背景的学生开设了一个为期八周的会话课，他们希望提高讲英语的流畅性、语法和发音。

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King's College Summer School is an annual training program for high school students at all levels who want to improve their English.

国王学院暑期学校是一个针对所有想要提高英语水平的高中生的年度培训项目。

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There are also two movies about African-American teenagers and the people who help them improve their lives.

VOA: special.2010.03.01

So, my advice to anyone who's trying to improve their ability to write in English

因此，我给想要提高自己英语写作能力的人的建议是，

英语阅读：技巧 - SpeakingMax英语口语达人

The other did not. The men who ate the fruit began to improve within seven days.

VOA: special.2009.04.21

In the long run short-sellers, who improve liquidity and price discovery, will be wary of trading the shares of politically important industries.

ECONOMIST: Speculators

And if there is truly a need for wind energy, entrepreneurs who improve the business's fundamentals will find a way to compete.

WSJ: Patrick Jenevein: Wind-Power Subsidies? No Thanks.

"I will only sign players who improve the side, rather than make signings for the sake of it, " Saints boss Andy Cale told BBC Radio Shropshire.

BBC: Saints signings spur title chase