һfи ԇһsectionһԒ̓ɂvЌԒֵLͨ2-3nvtҪLһЩЩ_5-6҂֪֣и 헟oՓǂ俼߀yȶǷdzģ σ(ni)漰VҌI(y)ԘO@ҪHҪ֪֪ҪƼˇvʷ˽
(dng)ȻҪϵ֪RȫĻDzܵ҂ľǏ ȡP(gun)֪R@rӛPӛ׃҂Qи ԇP(gun)I@Ҳи ώڽ̌W(xu)Џ{(dio)ӛPӛҪԵԭoՓ뱣15ֵĿ߀_30ֵĿֻҪҪ(zhn)_İи µ挍xPӛɲ
ӛPӛT̎Ԏ㼯ע߀Լӏ̕rӛԎ ϵļ(x)(ji)λcǣǷذl(f)F(xin)Լ(x)һmȻ µĕr^βӛ˺ܶPӛsΨ]ӛc?}rl(f)F(xin)ԼȻԼĹPӛ?ֻһӛPӛ© ܶ༚(x)(ji)(do)º(ni) Լ߉Ҳy?
ôב(yng)ԓЧӛ Pӛ?СVĂɲ֪и ӛPӛļɣ
һ ԒӛP(gun)I~
vӛи Pӛķrώһһ_ʼ͕V㣺ӛP(gun)I~ļɣ^P(gun)I~һָһЩҪČ~f~~~ͷ~Ȼ@Ҫעǣ҂Ҫ @ȻͬסĂ~@ҪϢ@ĿP(gun)I~}rؑ
eӣČԒW(xu)ώԃӌώٵfһBҊ@ͺܿܳx}@r҂ҪڹPӛwF(xin)еҊô҂ԓӛЩ~?
Student: Do you have any advice on how I should cover the story?
Advisor: Well, Max will want to talk to you but I am sure he will tell you to find out things like why the physics department's worried about enrollment?Has the number of students been getting smaller in recent years? By how much? What kinds of plans are they considering to address this problem?
τfķ挦ԒЮֵľwҊҪӛ~R(yng)ԓ@ӣworried?No. stu?how?plan?
ӛ䛾߉P(gun)ϵ~׳c
߉BһƪµĽ}j(lu)ÿһƪи ¶(yn)֔(jn)?sh)Ӵκ߉P(gun)ϵ֮gҊ߉P(gun)ϵD(zhun)ȡ혳eȡ߉ͨ^߉~߉ZwF(xin)һF(xin)߉~ͺܸܿc ߉~Ѹӛ܉ʹ(ni)P(gun)ϵһĿȻӛ̖ ߉~ ≠ different, unlike, contradict, rather than <> belong to, be part of due to, because, reason ∧ but, however, yet, in fact, actually, while ӛ̖ ߉~ ≠ different, unlike, contradict, rather than <> belong to, be part of due to, because, reason ∧ but, however, yet, in fact, actually, while
ٴѴңõ߉R܉ճҊ߉~ԼZ@ӟoՓڜyԇx Zֵĕrһ(yu)܉ƽr Ӗ(xn)ע⿂Y(ji)@Щ߉~ͶZ÷\ԼĿZ͌һ܉M߷֙n
ĄemY(ji)cӛҪϢ
Ŵ(sh)ͬW(xu)@ӵw(dng)҂ µ^ һ̫Ć~ӕr˼Sͣ@~ͬr© ˽ϢȻ^Űl(f)F(xin)ѽ(jng)֪făȥ
䌍и ԇУ(dng)F(xin)ҪϢƧĆ~ĕrvԒ߽^r¶ԽጣǷ(f)@Ϣ~҂Ҫľ ~ĕrסě_Ӳ^Ƥ ~Ľ֮ڹPӛӛҪϢң҂Ҫעи з(f)F(xin)ጵϢһҪϢOпǿcҲҪ҂cӛPӛĵط
СoeһֱܷĶfˎׂҪϢ?
Ok, a lot of people think of earth’s orbit around the sun as being perfectly circular, as smooth and as regular as, say, the way that hands move on a well-made watch, but it just doesn’t work that way. You are probably aware that the earth’s orbit around the sun, it is not shaped like a perfect circle. It is more of an oval, it is elliptical. But the shape of this orbit isn’t consistent; it varies over time, over a period of about a thousand years. Sometimes it is a little more circular, sometimes it is more elliptical. And when earth’s orbit is more elliptical, earth is actually closer to the sun during part of the year. Which makes earth, and in particular, the northern hemisphere, warmer. And why is that important? Well, because most of the planet’s glaciers are in the northern hemisphere, and if it gets too warm, then glaciers will stop forming. And we’ve already talked about how that affects earth’s overall temperature
䌍e@@ôL䌍ֻ_ҪϢҲfw{ֻc
䌍e@@ôL䌍ֻ_ҪϢҲfw{ֻcIJֶnjcĽ
һϢ@̫ꖵ܉ǙEAεġԭ5Ԓ(f)@ϢmȻF(xin)ƧĆ~oval}¿ һ^Ҋelliptical£
Ok, a lot of people think of earth’s orbit around the sun as being perfectly circular, as smooth and as regular as, say, the way that hands move on a well-made watch, but it just doesn’t work that way. You are probably aware that the earth’s orbit around the sun, it is not shaped like a perfect circle. It is more of an oval, it is elliptical
ڶϢ@܉Π׃@5Ԓ(f)гF(xin)һЩyȵĆ~consistentҷֹЩJ(rn)R@~}ֿĵĽo@F(xin)Еr@܉ΠAcЕrEAcEAcĕrӽ̫@fľ҂ЌW(xu)֪RеĽc@
But the shape of this orbit isn’t consistent; it varies over time, over a period of about a thousand years. Sometimes it is a little more circular, sometimes it is more elliptical. And when earth’s orbit is more elliptical, earth is actually closer to the sun during part of the year
ϢΠ׃Ӱ푵ϱγfԒһ5Ԓ@Ϣ㲻֪@Ҫc߀˷
Which makes earth, and in particular, the northern hemisphere, warmer. And why is that important? Well, because most of the planet’s glaciers are in the northern hemisphere, and if it gets too warm, then glaciers will stop forming. And we’ve already talked about how that affects earth’s overall temperature
mȻ @ô~R;䌍ĹPӛҪӛֻ@ҪϢɴ˿֪ETSһԻĵĽM(dng) ϢĕrҪ¸҈ԛQ^m(x) ˼SҪͬrfԒߣ^ܳF(xin)Լ˼S
˽и v}·Д(sh)Ųy
и vֵ·кҎ(gu)Եһf֞6E
һϹ(ji)n(ni)
ڶ~(@(ji)n})
B@~(һNF(xin)vʷ¼)
IJͨ^eķʽ߽B̵ķʽU}ľw(ni)
岽v^дW(xu)ᆖώԼᆖ֮o (ÿᆖ̎ܿǿc)
}MпY(ji)A(ᵽv}^ȥδa(chn)Ӱ푻h(yun)x)
(dng)˽и vֵ·ҪƽrĹPӛӖ(xn)^Rذ Ϣw{M@·@܉õذ½Y(ji)(gu)܉_?jng)] ÿһϢҲ}ľ
Ոӛסڂ俼и ^Pӛľ(x)ͨ ߷ֻMֱؽ(jng)Ęϣ܉м(x)wfķN\õ(x)СףÿһȡÝMijɿҼ!