名词
中文翻译：数字
同义词：
['count', 'figure', 'item例句：1. The number of students in the class is 30.（班上的学生有30人。）2. The number of cars on the road has doubled since last year.（路上的汽车数量比去年增加了一倍。）']
例句：
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1. The number of students in the class is 30.
班上的学生有30人。
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2. The number of cars on the road has doubled since last year.
路上的汽车数量比去年增加了一倍。
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3.The number of people who have signed up for the event is impressive.
报名参加该活动的人数令人印象深刻。