Each student or group has 3-5 minutes to cover their topic. The host will remind the participants with the ringing bell at the last minute.
每人或每组限时于3-5分钟内演说，时间到最后一分钟，主持人会以铃声提示参赛者。
Each student or group has 3-5 minutes to cover their topic. The host will remind the participants with the ringing bell at the last minute.
每人或每组限时于3-5分钟内演说，时间到最后一分钟，主持人会以铃声提示参赛者。
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