名词
中文翻译：数字
同义词：
['count', 'quantity', 'magnitude例句：1. The number of students in the class is 30.（班上的学生有30个。）2. The number of people who came to the party was 50.（来参加聚会的人数是50个。）']
例句：
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1. The number of students in the class is 30.
班上的学生有30个。
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2. The number of people who came to the party was 50.
来参加聚会的人数是50个。
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3.The number of cars on the road has doubled since last year.
路上的汽车数量从去年增加了一倍。