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Convection Earth Currents S Mantle Traditional Supposes Upper

en The traditional view supposes that the upper mantle of the earth behaves as a liquid when it is subjected to small forces for long periods and that differences in temperature under oceans and continents are sufficient to produce convection in the mantle of the earth with rising convection currents under the mid-ocean ridges and sinking currents under the continents.
category gmat
idx 006
parts

意群训练: The traditional vie w supposes tha t the upper mantl e of the earth behaves as a liqui d when it is subjecte d to small force s for long periods and tha t differences in temperatur e under ocean s and continent s are sufficient to produce convection in the mant le of the earth wit h rising convection currents under th e mid-ocean ridge s and sinking current s under the continents .

mark

标志: The traditional view supposes that the upper mantle of the earth behaves /as a liquid/ /when it is subjected to small forces for long periods/ and that differences (in temperature) (under oceans and continents) are sufficient to produce convection (in the mantle of the earth) /with rising convection currents under the mid-ocean ridges and sinking currents under the continents/.

cn

译文: 传统观点 认为地球的上层地幔 /当其长期受到小的压力的时候/,其行为 /类似于液体/;而且 认为 (在海洋和大陆下地幔 的)(温度的)不同 足够产生 (地球地幔中的)对流 ,/在中部海脊之下产生上升对流,在陆地下产生下降流/。

explain

解释: 主句后面带着两个宾语从句,第二个从句离主句的谓语动词supposes比较远,这需要读者对读长句子有心理准备。后面这个从句的结构比较复杂,主语differences有两个修饰成分,把主语和谓语隔得比较远;with之后的内容是修饰produce的方式状语。

另外本句中的专有名词也比较多,但是本句中的这些单词都是理科文章中的常用单词。

type 复杂修饰+专有名词
score 5

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