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astronomical unit
ast
ast
ast
ro
rə
rē
no
ˈnɑ:
naa
mi
mɪ
mi
cal
kəl
kēl
u
ju:
yoo
nit
nɪt
nit
British pronunciation
/ɐstɹənˈɒmɪkəl jˈuːnɪt/
AU

“astronomical unit”的英语定义和含义

Astronomical unit
01

天文单位, AU

a unit of measurement equal to the average distance between the Earth and the Sun, approximately 149.6 million kilometers
Wiki
example
例子
Earth's orbit spans about one AU.
地球的轨道跨度约为一天文单位。
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