to be sure of 肯定
to be sure of sth 无疑会 ; 对…有信心
to be sure of yourself 充满信心
England must win this game to be sure of qualifying for the World Cup.
英格兰队必须拿下这场比赛才能确保获得世界杯的参赛资格。
《牛津词典》
England must win this game to be sure of qualifying.
英格兰队必须拿下这场比赛才能确保获得资格。
We have to be sure of that first.
我们得确信这是第一位的。
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