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简短的演说(二十分钟以下)要比长篇大论更有效。即使经验丰富的演说者也不宜长谈超过三十分钟,除非该主题对听众极为重要。
A short speech (under twenty minutes) is more effective than a long story. Even experienced speakers should not talk long for more than thirty minutes, unless the theme is extremely important to the audience.