One's confidence in... is multiplied a hundredfold.;be [feel] full of confidence;brim with confidence;with unbounded confidence ;

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。
来源:《柯林斯高阶英汉双解学习词典》A wholehearted attitude and outlook, brimming with confidence towards a higher goal.
以全心的姿态和面貌, 信心百倍的朝着更高的目标迈进.
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