From 1958 onward, and as the city became more industrialized in the 1960s, the polluted stream and its Bridges were gradually buried under at-grade asphalt and a four-lane elevated freeway.

自1958年来，20世纪60年代城市工业化程度日益提高，污染的运河和桥梁逐渐被柏油马路和4车道的高架高速公路替代。

youdao

For this course a pass in English at grade B is acceptable.

英语成绩B级就可以学这门课程。

《牛津词典》

I was just in grade school at the time, but I remember it perfectly.

我当时刚上小学，但我记得很清楚。

《柯林斯英汉双解大词典》

Thanks to this parental freedom, Milwaukee's public schools are now promising parents who enroll their kids in kindergarten personal tutors -- at the school's expense -- if those students are not reading at grade-level by the end of second grade.

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Most ratings remained unchanged, and generally at investment-grade levels.

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The average student enters KIPP two years below grade level in fifth grade, and leaves KIPP in eighth grade achieving at a ninth-grade level.

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