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签到天数: 313 天 [LV.8]以坛为家I
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发表于 2020-4-28 07:26:59
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7 w- Z G! `- w/ l; V7 RBut not every target is helpful.--------------------------------------% g# g' g" [8 R& t8 l
并非每个目标都会有帮助# B' u6 X1 H' ]5 q9 j
To see why, consider that goal of 100% renewable energy.
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7 W0 |2 A) I( N [; p7 p8 x100可再生能源就是如此6 t4 [- ]' ?- G# U
) x5 ^3 v4 j# h* Y9 R It makes solving climate change seem deceptively easy. In fact, though wind and solar can generate all a country’s electricity on some days, renewables still account for less than 8% of the world’s total power output.
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4 j0 W+ H" d' y注意高亮的几个词( v# q9 z; i0 S$ B
为什么100可再生能源不可行?
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. J1 o5 K% h" I w+ `: C x, d Moreover, cleaning up electricity is only part of the battle. Even though gas-fired heating and cooking can be at least as big a source of greenhouse-gas emissions, renewable heating gets minuscule attention. + P" F2 b5 c6 Y+ \" a( |+ T% |! S
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这一句你根本没看清楚,ok C$ H7 q) O: f6 N
注意一下高亮的词。作者的逻辑是这样的——
0 A, g8 I6 X" ^% w0 z6 K(可再生能源【风能和太阳能】只能占全球能源产量的8%不到)→发电方面减少碳排放只是减少碳排放这场战斗中的一部分→燃烧天然气取暖和做饭造成的碳排放至少和烧煤发电一样多→但可再生能源用于取暖却几乎没有得到注意/ B3 g, U6 D, F5 r" h: }
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Transport policy is erratic, too.
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尾气排放也是碳排放的一大重要来源,但是交通政策却反复无常
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Carmakers may hit their goal of annual sales of 10m electric vehicles in a decade, but battery-powered road haulage, shipping and aviation are dreams. p3 ?. ~ j& J/ a
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, I) n, z8 J7 c2 c ?尽管汽车制造商年度电力汽车销售量可以到到1千万辆的目标,但电力公路货运、航运、空运却只是难以实现的梦想而已。
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A much-quoted claim that America could rely on wind, solar and hydro alone for its electricity has recently been witheringly criticised by a group of respected academics.7 w3 f `4 i4 T* A) W# k1 p: w+ E
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美国用电全部靠风能、太阳能、谁能发电被有威望的学者驳斥得体无完肤。
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6 y8 W- p; Q% m% X- E6 s以上所说的,归结为一句话:百分之百可再生能源根本不具可行性。: r$ g, m- \6 ?/ h* }
" h( e; k5 v! A5 O1 q# ^* X自己再去看看吧!然后再去想想——语法分析究竟有多大用处?' T- g- K! x) a/ t. n
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