第五个按扭是给你唱歌派用场的，只需轻轻一按，铅笔芯就能变成麦克风，让你从作业中走出来放松自己，可以得到一种说不出的欢乐。
The fifth button is for you to sing, case, slightly press pencil lead can become a microphone, let you go out to relax from the job, can get a kind of unspeakable joy.
第五个按扭是给你唱歌派用场的，只需轻轻一按，铅笔芯就能变成麦克风，让你从作业中走出来放松自己，可以得到一种说不出的欢乐。
The fifth button is for you to sing, case, slightly press pencil lead can become a microphone, let you go out to relax from the job, can get a kind of unspeakable joy.
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