如果你用这种语调讲话，你不仅会十分容易被理解，你也同时会听起来十分具有自信心，显得精力充沛，而且十分具有说服力。
If you use this intonation not only will you be easier to understand but you will sound much more confident dynamic and persuasive.
如果你用这种语调讲话，你不仅会十分容易被理解，你也同时会听起来十分具有自信心，显得精力充沛，而且十分具有说服力。
If you use this intonation not only will you be easier to understand but you will sound much more confident dynamic and persuasive.
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