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Earth-threatening
Earth-threatening
Earth-threatening
例句：
1
Also
,
experiments
could
also be
done
in
asteroid
propulsion
as
a
test
for deflecting an
Earth
-
threatening
asteroid
.
同样
，
也
可以
做
实验
测试
，
推进
作为
一
颗
小行星
的
Earth-threatening
等等
。
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异性恋
形吊灯
拓扑
man
,
.
Facebook
you
's
after
"
a
then
not
what
say
by
?
of
as
Earth-threateningEarth-threateningEarth-threatening