单词：interstellar parallax
单词：interstellar parallax 相关文章
AS IT IS 2014-02-23 World Digital Library Reaches 9,900 Items 世界数字图书馆达9900项 Hello and welcome to As It Is, from VOA Learning English! Im Steve Ember in Washington. The American space agency NASA launched its first Voyager spacecraft
2014年VOA慢速英语(三)月
SECTION 1: LISTENING TEST (30 minutes) Part A: Spot Dictation Directions: In this part of the test, you will hear a passage and read the same passage with blanks in it. Fill in each of the blanks with
高级口译真题及答案
Parallax is a phenomenon by which we can judge the distance to things just by looking at them. Astronomers use parallax to calculate the distance to stars. Do you need a gigantic computer-based observatory to use it? Not at all. Your finger will do n
英语时差8，16
Parallax 视差就是从有一定距离的两个点上观察同一个目标所产生的方向差异。从目标看两个点之间的夹角，叫做这两个点的视差，两点之间的距离称作基线。只要知道视差角度和基线长度，就
英语听力文摘 English Digest