- 問題詳情:Itkeepsyourinsidesfromfallingout.Ithelpsyouwarmupwhenyouarecold,anditcancoolyouoffwhenyouarehot.Itletsyoufeelthingsbytouch.Whatisthis?Yourskin,ofcourse!Whatdoesyourskinaskforinreturnforallthewonderfulthingsitdoes?Justalittlecare!Solet'slearn...
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