| 单词 | certain number |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔change〕After a certain number of points, the players changed round.到达一定比分后,运动员交换了场地。英汉大词典〔nonsense〕I don't know why you believe that nonsense about certain numbers being unlucky.我不明白你为何会相信某些数字意味着霉运的荒唐说法。韦氏高阶〔round〕Sports Games An interval of play that occupies a specified time, constitutes a certain number of plays, or allows each player a turn.【体育运动】 【游戏】 一轮，一回合，一局，一场，一盘：占据一定的时间并由一定数量的比赛构成或允许每个运动员轮一回的比赛间隔美国传统〔time〕Only a certain number of people are allowed in the building at any one time.该建筑任何时候都只允许一定数量的人员进入。剑桥高阶When we visited the Tower of London we had to wait outside because only a certain number of people were allowed in at (any) one time/at any given time (= at any particular point in the day).参观伦敦塔时我们必须等在外面，因为一次只允许进一部分人。剑桥国际 |
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