介绍:
Round 1 小王子在国王面前打呵欠 国王觉得不礼貌，命令他忍住；
Round 2 小王子道明自己太累来这样，国王命令他打呵欠：
Round 3 小王子很尴尬 打不出 国王允许他有时可以打呵欠 有时可以不用
The King insisted on maintaining his authority, not allowing others to disobey him. However, he is such a good man that his orders are resonable.
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