It's a dead certainty that this horse will win the race.

这匹马在比赛中获胜是必定的.

《简明英汉词典》

It's a dead certainty that he will come in time.

他肯定会准时来的.

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It was with dead certainty that Ken will leave for Beijing.

肯一定会前往北京.

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He said he would come to the party for a dead certainty.

他说过他肯定要来参加宴会的.

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