Light 意为“光”时，是不可数名词，因此要表示几光年，year 要用复数形式 years，这也是复合名词变成复数的情况之一。当科学家计算其他行星距离地球或彼此有多少光年时，他们计算的是它们的距离，而不是它们的年龄。The nearest star to earth is about 4 light years away.地球离最近的恒星大约为4光年。The obje...
It is over 4 light - year away from earth. 它距地球4 光年 多. 互联网 And one light year is the distance that light travels in a year . 1. 一光年就是光在一年中传播的距离. 互联网 A light - year is about 6 trillion miles, the distance light travels in a year. ...
Light 意为“光”时,是不可数名词,因此要表示几光年,year 要用复数形式 years,这也是复合名词变成复数的情况之一。当科学家计算其他行星距离地球或彼此有多少光年时,他们计算的是它们的距离,而不是它们的年龄。 The nearest star to earth is about 4 ...
The meaning of LIGHT-YEAR is a unit of length in astronomy equal to the distance that light travels in one year in a vacuum or about 5.88 trillion miles (9.46 trillion kilometers). How to use light-year in a sentence.
What is a light year? 一光年是指光在真空中传播一年经过的距离 A light year is the distance that light travels in one Earth year. 光前进的速度非常快 Light travels very fast, 大约每秒186000英里(或300000千米) about 186,...
light year 英[lait jə:] 美[laɪt jɪr] 释义 n. 光年 词态变化 复数:light years; 实用场景例句 全部 光年 The nearest star to earth is about 4light yearsaway. 地球离最近的恒星大约为4光年。 牛津词典 Full employment still seemslight yearsaway....
Historically, a light year was defined as the distance that light travels in one tropical year, which refers to the time it takes for Earth to complete one full orbit around the Sun, based on the standards established in 1900. This measurement was primarily used in astronomy to express vast...
百度试题 结果1 题目A light year is the distance travelled by light in how many Earth years?相关知识点: 试题来源: 解析 1 反馈 收藏
Related to speed of light:light year,E=mc2 ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1. speed of light- the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 me...
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