| 例句 |
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。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。Brazil need to beat Uruguay to be certain of a place in the finals.巴西必须击败乌拉圭才能确保进入决赛。Send all letters recorded delivery if you want to be certain they will arrive.倘使你要确保信件递到无误，用记录式邮递寄发好了。 |