单词：parchment right ventricle
羊皮纸样右心室
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Are You Sure Your Hearts In The Right Place?你能确定自己的心脏是在正确的位置上么？ On todays Moment of Science, were sure your hearts in the right place. But where is it exactly?!? CPR classes show how to press on the sternum, in t
发表于:2018-12-28 / 阅读(158) / 评论(0)
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PARCHMENT IS MADE FROM THE SKINS OF ANIMALS SUCH AS SHEEP, CALVES, OR GOATS. THE SKIN IS DRIED AND TREATED UNTIL IT BECOMES FLAT AND PAPERLIKE. PARCHMENT IS MUCH STRONGER THAN PAPER. IT IS MORE EXPENSIVE, TOO. THE BEAUTIFUL PRAYER BOOKS AND BIBLES CO
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名人认知系列 Who Was
名人认知系列 Who Was