名词
中文翻译：班级
同义词：
['group', 'class', 'grade', 'group of students例句：1. She has taken several classes in English this semester.（这个学期她上了好几个英语课。）']
例句：
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1. She has taken several classes in English this semester.
这个学期她上了好几个英语课。
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2. The teacher is giving a lecture on the history of the United States today.
老师今天在讲解美国的历史。
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3.He is taking his final exams in math and science this weekend.
这个周末他要上数学和科学的最后一节课。