Chinese Version(中文版)
|
EBooks(电子书)
Ic
[ai'si:]
Examples
Sir
William
Herschel
'
s
observations
,
extended
over
many
years,
confirmed
both
the
nebular
hypothesis
and
the
theory
of
the
systemat
ic
arrangement
of
the
stars.
Walter Libby.
An Introduction to the History of Science
.
Checker: Marge
