他的胡须扎得她的面颊痒痒的。
看到别人抓耳挠腮，随即发现自己也有了挠痒痒的冲动，这种情况不只在你一人身上发生。
If ever you have felt a previously undetected itch when you notice someone else scratching, you are not alone.
比我高大的女孩过去总是追赶着挠我痒痒。
我告诉她，给自己挠痒痒是不可能的，不过科学家们已经发明了一个挠痒痒机器人，能够用遥控器控制挠痒痒。
I tell her it's impossible to 11 tickle yourself, although scientists have developed a robot tickler which tickles by remote control.
科学家通过“挠痒痒”这种方式来使不同种类的大猩猩和一些人类婴儿发出笑声。
That's how researchers made a variety of apes and some human babies laugh.
小鸟飞上狮子的鼻子，她用脚在上面跳舞，挠痒痒。
Little bird flies up to lion's nose. She moves her feet. She dances and dances on his nose.
小鸟飞上狮子的鼻子，她用脚在上面跳舞，挠痒痒。
Little bird flies up to lion's nose. She moves her feet. She dances and dances on his nose.
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