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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Emma Marris's article is an insult and a disservice to the thousands of passionate who work tirelessly to improve the lives of animals and protect our planet.

艾玛·马里斯的文章冒犯、伤害了成千上万的热情工作者，他们不辞辛劳地致力于改善动物的生存处境和保护地球。

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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