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The local chamber of commerce, which represents the industry in the area, hired me as a consultant to do a one year study on fishing in the Biramichi river and write a report for them.

当地的商会代表着这个地区的工业，他们雇佣我作为顾问做一项关于比拉米奇河渔业的一年期研究，并为他们写一份报告。

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A two-year study has found that most Americans have done it.

一项为期两年的发现大多数美国人都会将收到的礼物转送出去。

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But a three-year study showed that beetles like to feed more on the transgenic plants, increasing cases of wilt disease.

VOA: special.2009.10.27

The study was, eleven- and 12-year-old boys at a camping program.

实验中有一些11，12岁的男孩,参加一个野营活动。

耶鲁公开课 - 心理学导论课程节选

so it's specifically for people in their first year of study.

主要就是为新生开设的。

选择国际学的理由 - SpeakingMax英语口语达人

Vaxgen Inc. has devised a three-year study in which participants will be counseled around 15 times.

CNN: Vaccine

The two year study will also involve academics from Dundee and Glasgow Caledonian universities.

BBC: Nurse at desk

Researchers at Oxford University recently published a three-year study of Avon ladies in South Africa.

ECONOMIST: Avon in South Africa: Cosmetic difference | The