此前，科学家们注意到污染物随风抵达北极。
Previously, scientists noticed pollutants arriving in the Arctic with the wind.
大法官安东尼·肯尼迪写道，此前的裁决存在缺陷。
Justice Anthony Kennedy wrote that the previous decisions were flawed.
该公司此前曾宣布关闭的计划，但没有说哪些地点将受到影响。
The company had previously announced the planned closures, but had not said which locations would be affected.
其他研究人员此前已经对这种细菌进行了改造，以从有机废物中产生酒精。
Other researchers had previously modified the bacterium to produce alcohol from organic waste.
在对组织样本进行基因分析后，科学家确认这条蛇是一个此前不为人知的物种。
The scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
新屋销售激增和每周失业救济人数下降表明，经济可能不像一些分析师此前预期的那样疲软。
A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.
杜克大学的詹姆斯·伯克是一项研究的作者之一，该研究回顾了此前有关认知能力下降的研究。
James Burke of Duke University is one of the authors of a study reviewing previous research on cognitive decline.
皮尤研究中心此前的一项分析预测，当今年轻人中可能有多达四分之一的人这辈子都不会结婚。
A previous Pew Research Center analysis projected that as many as one-in-four of today's young adult may never marry.
美国国家老龄化研究所赞助的一项研究显示，世界最富裕国家的居民可能比此前预计的寿命更长。
Citizens of the world's wealthiest countries may live longer than previously predicted, according to a study sponsored by the National Institute on Aging.
该电视台报道称，这名来自洛斯巴尼奥斯的四年级学生游完了全程，打破了此前由一名10岁男孩保持的纪录。
The TV station reported that by completing the swim, the fourth-grade student from Losbanios broke a record previously held by a 10-year-old boy.
BRP有着良好的记录，此前曾开发出突破性产品，包括Ski-Doo雪地车和Sea-Doo 摩托艇。
BRP has a good record, having previously developed breakthrough products including the Ski-Doo snowmobile and the Sea-Doo personal watercraft.
此举效仿了多家其他杂志的做法，数据分析的基本错误正造成很多已发表的研究成果不可复制，此前人们普遍关注这个问题。
The policy follows similar efforts from other journals, after widespread concern that basic mistakes in data analysis are contributing to the irreproducibility of many published research findings.
该研究小组由哈佛大学的格雷厄姆·雷诺兹博士带队，这位科学家在对组织样本进行基因分析后，确认这条蛇是一个此前不为人知的种类。
The team was led by Dr. Graham Reynolds, from Harvard University, the scientist confirmed the snake was a previously unknown species after conducting a genetic analysis of tissue samples.
尽管7月从股票型基金中撤出的资金达到1987年10月以来的最高水平，但7月基金份额的销售并不像某行业协会此前估计的那么低。
Even though more money was removed out of stock funds in July as in any month since October 1987, sales of fund shares in July were not as low as an industry trade group had previously estimated.
她当时告知我们，18位教职员在此前的一年里离开了。
She informed us that eighteen members of the staff had left during the preceding year.
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