The coach is supremely confident that his team will reach the finals.教练对他的球队打入决赛信心百倍。If they were blooming with confidence they wouldn't need me.他们要是信心百倍的话，也就不会叫我了。He confidently proclaims that he is offering the best value in the market.他信心百倍地声称他的产品是市场上最物有所值的。