In astronomy the term "red shift" denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the Earth.
语法 Sentence Correction-4426
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valora0909 2014-10-16 17:16:00
看全句结尾处"by the rapid motion of the galaxy away from the earth"看出应该light应该是"been shifted"，因此用被动语态
慕然 2016-12-29 15:10:09
idiom: the extent to which. Passive voice needed: has been shifted...by...
Ines要上700 2016-07-04 06:06:13
the extent to
Ines要上700 2016-07-06 21:32:16
The extend to wihch 是固定搭配，表示一定的程度
Ines要上700 2016-07-04 06:06:42
看全句结尾处"by the rapid motion of the galaxy away from the earth"看出应该light应该是"been shifted"，因此用被动语态
