B. Interstellar formaldehyde can be synthesized by tunneling.
C. Cosmic rays can directly synthesize complex organic molecules.
D. The galactic clouds are the places where prebilogical evolution of compounds necessary to life occurred.
Vocabulary
Arrhenius equation
阿雷尼厄斯方程式
Arrhennius (Svante August) 1859——1927 瑞典理化学家。1903年获诺贝尔化学奖
quantum-mechanical effect
量子机械效应
quantum mechanic
量子力学
tunnel挖隧道。这里指贯穿势垒
tunnel through, onto 穿到……进到,贯穿
repulsive 排斥
activation energy活化能量
formaldehyde甲醛
polysaccharide
多糖醇,聚合酶
cellulose 纤维素
starch淀粉
galactic
银河的,巨大的
come into play开始活动/起作用
难句译注
However, recent experiment evidence reveals that although the Arrhenius equation is generally accurate in describing the kind of chemical reaction that occurs at relatively high temperature, at temperatures closer to zero a quantum-mechanical effect known as tunneling comes into play; this effect accounts for chemical reactions that are forbidden by the principles of classical chemistry.
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