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1.
The
new
studies
tackle
a
more
fundamental
question
:
How
much
water
did the
moon
contain
inside
when
it
formed
,
4
.
5
billion
years
ago
?
新
的
研究
落
足
于
一个
更为
根本
的
问题
:
45亿
年
前
,
月球
形成
时
其
内部
含有
多少
水分
?
xīn
de
yán jiū
luò
zú
yú
yī gè
gèng wéi
gēn běn
de
wèn tí
:
sì shí wǔ yì
nián
qián
,
yuè qiú
xíng chéng
shí
qí
nèi bù
hán yǒu
duō shao
shuǐ fèn
?
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