Next came the Erie Canal, an enormous project in its day, spanning about 350 miles.

接下来是伊利运河，这是当时的一项巨大工程，全长约350英里。

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In part this is because it takes so much risk in its day-to-day operations.

一部分原因是好莱坞日常运作中已经存在太多的风险。

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In its day, it was one of the greatest books to survive from the ancient world.

在它的日子里，那是从古代世界幸存下来的最伟大书籍之一。

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One of its official organizers in the United States is a Washington based nonprofit group called Earth Day Network.

VOA: special.2010.04.21

This was a radical concept in its day, evidently. The punishment should fit the crime, no more and no less for all free persons--granted slaves are not included--regardless of social class. Equality before the law.

很显然，这是当时最根本的概念，惩罚应该,与罪行相符，不偏向任何自由人，不顾社会阶级,当然奴隶除外，法律面前人人平等。

耶鲁公开课 - 旧约导论课程节选

This day is separated from all other days by additional rules and observances in keeping with its profound holiness.

这一天被附加的许多规则与其他日子完全区别开来,目的是保持它深厚的神圣性。

耶鲁公开课 - 旧约导论课程节选

And even their most uninventive proscenium shots can create content with revolutionary power in its day.

FORBES: Shooting the Proscenium Arch: How People Fail to Realize Technology's Potential

Brand Harry S. was a stinker in its day but has gained in the collectors' market.

FORBES: BRAND HYPOCRISY

Although "Bruges-La-Morte" enjoyed considerable success in its day, it lost much of its appeal for succeeding generations.

WSJ: Georges Rodenbach | Bruges-La-Morte | Incarnating the World Within | Masterpiece by James Gardner