и俼еķc(din)Ҫ˶Ҫ֪Լķ揊(qing)ķᘌ(du)Եľ(x)Ǯ(dng)и俼|ˣҪr(sh)D(zhun)Q·
e(cu)`1W(xu)(x)иDZи~
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䌍(sh)и (tng)f(shu)x@Ă(g)~RDzͬ~Rx֣Ȼ@һֻҪ켴mȻ (tng)ֿ~RҪ(du)һЩ(du)Ҫ һҪ죬 Z(y)һҪҪ졣һ Ҫ(du)(j)@ЩA(ch)ĵ~ROϤ
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Ҫ~и½Y(ji)(li)Óx~ ֻ¶ȥY(ji)
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(du)ڻA(ch)ǺܺõͬW(xu) hֱӽ|и 俼r(sh)g^L(zhng)hͨ^(gu)mԼyȵĽ̲ā(li)ѭuM(jn)ԼӢZ(y)ľCό(sh)@摪(yng)õIJϣ ώԃ (tng)ͨ(hu)hͬW(xu) (tng)step by stepsixty-second scienceȵ
(du)(li)f(shu)ӢZ(y)W(xu)(x)^խһ㲻ܿĽ̲@Ҫ҂ǴW(xu)Ҫȥ (tng)BBCһЩýw@漰һЩI(y)~R(du)(li)f(shu)Ї(gu)W(xu)|ú҂Ҫͨ^(gu) (tng)һЩ
e(cu)`3˽ֵĿ췽ƴ(sh)
ÿһֶиҪ (tng)֮֮L(fng)ˮ猑ܶͬW(xu)AÏ(f)sĆ~Ï(f)sĆ~Ѓɴc(din)һOƴe(cu)`õòǡ(dng)еĆ~ֵgò(zhn)_һʹֻ(hu)ЦԷԆ~đ(yng)ҪԵwmÞdžμ(f)s~Rٱ (tng)ܶͬW(xu)(hu)äĿӛһЩ¼(x)(ji)ˌ(du)wܘ(gu)ҪϢİȱ(du)(ni)M(jn)Кw{Y(ji)ղסµc(din)}DzҪI(lng)䌍(sh) (tng)ֲҪм(x)(ji)ȥ (tng)ֻֻҪ (tng)ԓ (tng)ă(ni)@һփ(ni)ݴ}ѽ(jng)ˡ@һփ(ni)ͨ(hu)@Ę(bio)־~(li)(do)
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e(cu)`5](mi)ϙC(j)^(gu)ģM
иϙC(j)ԇѽ(jng)(x)T˕}ͬW(xu)һҪǰm(yng)һC(j)ĸX(ju) (tng) (tng)Ӻ}҂(jng)vӢZ(y)ԇ (tng)Կ@(g)(wn)}ȥ (tng)@N“ã (tng)“ĸX(ju)҂Ҫȥm(yng)ġ
Ͼи俼5(g)e(cu)`һҪ@ͬW(xu)(x)ͿԇҪ`ҪV뿿Rr(sh)_ø߷yȺܴW(xu)(x)ǂ(g)շe۵DZһؼܳɹґ(yng)ԓƽ͵đB(ti)ȥ(du)иԇÿ(g)˶(hu)кܺõİl(f)]