иx俼ĽǶȁ(li)vҪB(yng)һNXǰL(zhng)ƪӢZ(y)µĸX(ju)ƽr(sh)пյĕr(sh)ͿԿȥI(yng)@ӵһNh(hun)?yn)xIBTζ횺X?yn)IBT4(xing)ԇ(ni)ݶXǰɵxȻ⡣
LJ(gu)(ni)ܶW(xu)Ǜ](mi)L(zhng)XǰxӢZ(y)µ(x)Tͭh(hun)ҪI(yng)죬ƽr(sh)ӢZ(y)ľW(wng)վL(zhng)ƪČW(xu)g(sh)(li)@]ׂ(g)e(cu)ľW(wng)վă(ni)ݺиx}P(gun)֮̎@ЩW(wng)վnational geographic, economist, new scientist, wikipedia
W(wng)վӢZ(y)ֻƽr(sh)һNgӜ(zhn)Ҫ(zhn)߀ҪиӾwһЩEhҪׂ(g)ȥ(zhn)䡣
һc(din)~RA(ch)Ҫ(sh)иxһ(g)ܴɫЌ(zhun)T(mn)~}Ҳ~R}гһ(g)~oĂ(g)x(xing)xc@(g)~~xӽϵ@Щ~RǛ](mi)һ(g)Vȥֻпƽr(sh)Լ~ReһЩW(xu)g(sh)W(xu)Ƶ~R
P(gun)(ni)ݵĎ״ǵγɺǵ|(zh)ʲô(ni)(gu)~Rȵ~R}ռı߀dz֮ߣһƪx13}Ŀп3-5}~R}QҪIBTԇһҪȥ~Ԓ(hu)}W(xu)ƱҪȏAZҪЧĶ
ڶc(din)Z(y)֪R(sh)Ҫ˽иxԇһ(xing)^ȫĿW(xu)ӢZ(y)ă(ni)ݣԏ~R_(ki)ʼһֱѽ(jng)ƪ¶Ќ(du)(yng)Ŀ}(li)ȥҪӵĺx~RJ(rn)R(sh)Ҳһȫеĕr(sh)Ҫͨ^(gu)Z(y)֪R(sh)ȥ@NZ(y)ںܶ}wF(xin)ָ}Ҫ~ָ~Ă(g)Еr(sh)Ҫͨ^(gu)^eɷֵķҵ
c(din)߉P(gun)ϵ~ҪӛӢZ(y)ӵܶr(sh)Ҫȥ߉P(gun)ϵҊ(jin)߉P(gun)ϵв(and, as well)^(than, as….as)(because, so, therefore, thus, resultfrom)fM(jn)(also, furthermore)D(zhun)(but,however, yet)ȵӃ(ni)@Щ߉P(gun)ϵӺ;֮gҲ@Щ߉P(gun)ϵ@Ӳƪµ}j(lu)ȥӺ(jin)@(li)}͡
c(din)xҪӏ(qing)иxԇÿƪĕr(sh)gҎ(gu)20犣˿L(zhng)ƪ߀1113}Ŀă(ni)ԕr(sh)gǷdzoģxĕr(sh)ٶȾͺP(gun)IѿҪĵһЩxĉ(x)Txxָx@ӵ(x)Tֻ(hu)xٶȡԿxڿԇǷdzҪxĕr(sh)ҪȺ(li)
c(din)עؚw{B(yng)иxһ}ȫ˼Ěw{A(ch)ɵģsummaryľǿ(du)µw˿ƽr(sh)(x)ĕr(sh)һҪע⌦(du)¶Ěw{܉^̵ĕr(sh)g(ni)¶Ĵx(li)ȻM(jn)пY(ji)xܴĺxă(ni)ƽr(sh)עؚw{B(yng)ôԇĕr(sh)Ͳúsummary@Nw{Ե}