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<br />&nbsp;&nbsp;&nbsp;е²ÿһԾܼ㡣ʹ˿ܻߴ·ȻҪǵѡؿšµ·ϵظĽԼȻûڱҪʱһҲǺҪġ֮ɡ
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<br />&nbsp;&nbsp;&nbsp;ţ(Sir
<br />IsaacNewton)ӢѧҡѧҼȻѧңΪֵ¼ǱϵµһƻͷԭݳѧĻ˶ɡ
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<br />½Ա³壬С90ԡĩʵۡΪʺǡ
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<br />Pitman)
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<br />&nbsp;&nbsp;&nbsp;δ֪磬Ǳ뱣־η֮ġ
<br />ŵ
<br />&nbsp;&nbsp;&nbsp;иǿֱ
<br />ȱ
<br />&nbsp;&nbsp;&nbsp;Ҫ󡢷ա̫ǿ
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