单词：geometrical optics limit
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limb composite rebellion worship recede calibration geometrical constitution reciprocal hydrocarbon spouse intimidate intercourse sniff reunion immune enrich oppress erosion clan constraint
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Newtons Apple Tree 牛顿的苹果树 Newton was an English physicist and mathmatician,and was the greatest scientist in his era. 牛顿是一位英国物理学家和数学家，也是他那个时代最卓越的科学家之一。 Isaac Newton was bor
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