first grade;

Almost a third of the freshmen said they were working during the summer vacation.
几乎三分之一的一年级生说他们在暑假期间打工.
来源:词典精选例句The first years and second years got a choice of French, German and Spanish.
一年级和二年级学生可以在法语、德语和西班牙语中选一门。
来源:《柯林斯高阶英汉双解学习词典》About one-fifth of the freshmen reported that they had been brought up in small towns.
大约有五分之一的一年级生是在小城镇长大的.
来源:词典精选例句It is quite unusual for a freshman to be younger than eighteen or older than nineteen.
一年级新生小于十八岁或大于十九岁是相当特殊的.
来源:词典精选例句
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