| 单词 | to be certain |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔COME FROM〕The rumour is now so widespread, it's difficult to be certain of its origin. 谣言现在已传得人尽皆知，很难弄清楚是从哪里传出来的。朗文写作活用〔certain〕Brazil need to win to be certain of a place in the finals.巴西需要赢得一场胜利来确保晋级决赛。外研社新世纪〔certain〕If you want to be certain of getting a ticket, book now.要想有把握买到票，现在就得预订。牛津高阶〔certain〕It is wise to apply early to be certain of obtaining a place.要确保得到位置的话最好是早些申请。朗文当代〔double book〕To make two reservations for (a seat or hotel room, for example) in order to be certain of obtaining one.重复订位：重复订位以确保能取得一位，如订位或旅馆订房美国传统〔room〕He had to be certain. There could be no room for doubt.他必须确定无误。不能有任何的犹疑。牛津高阶 |
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