國立中山大學機械與機電工程學系研究所 博士論文 機械應力對大馬士革鑲嵌金屬/絕緣層/金屬結

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Laugh and cry. Having a good sob is reputed to be good for you. So is laughter, which has been shown to help heal bodies, as well as broken hearts. Studies in Japan indicate that laughter boosts the immune system and helps the body shake off allergic reactions.
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