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.

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。

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They have been huge supporters of the district's advanced mathematics program, which once began in the fourth grade but will now start in the sixth.

他们一直是学区高等数学项目的大力支持者。该项目本来是从四年级开始，但现在将从六年级开始。

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Both left school in the fourth grade in Mexico and are resident aliens in the United States.

在墨西哥时两个人都是在4年级退的学，现在都是居美外侨。

《柯林斯英汉双解大词典》

In 1998, the percent of fourth-grade students in the highest-poverty public schools who met or exceeded the NAEP Basic level in reading was about half the national rate, and progress in reading overall is only back to 1998 and 1990 levels.

UNESCO: II Part Analytic Section

"I'm in a car running from the tornado, " said Amy Sharp, who last week pulled her fourth-grade daughter from the Plaza Towers Elementary School as a storm approached with 210 mph winds.

NPR: 2 Dead When Tornado Hits Oklahoma City Area

For Ms. Winfrey's daughter Kennedy a 10-year-old in the fourth grade Picture Day is about the pageantry as much as the photographs.

WSJ: It's Picture Day, Say 'Cheesy'