最終更新日:2022/12/23
例文
The
first
expedient
adopted
to
reconcile
the
lunar
and
solar
years
seems
to
have
been
the
addition
of
a
month
of
thirty
days
to
every
second
year.
Two
lunar
years
would
thus
contain
25
months,
or
738
days,
while
two
solar
years,
of
365¼
days
each,
contain
730½
days.
The
difference
of
7½
days
was
still
too
great
to
escape
observation;
it
was
accordingly
proposed
by
Cleostratus
of
Tenedos,
who
flourished
shortly
after
the
time
of
Thales,
to
omit
the
biennary
intercalation
every
eighth
year.
復習用の問題
The first expedient adopted to reconcile the lunar and solar years seems to have been the addition of a month of thirty days to every second year. Two lunar years would thus contain 25 months, or 738 days, while two solar years, of 365¼ days each, contain 730½ days. The difference of 7½ days was still too great to escape observation; it was accordingly proposed by Cleostratus of Tenedos, who flourished shortly after the time of Thales, to omit the biennary intercalation every eighth year.
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