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検索内容:
area
noun
grey area
noun
Area 51
name
(informal,
US,
military,
aviation,
research,
espionage,
ufology)
A
secret
military
facility,
an
airport,
an
airbase
in
Nevada
Test
and
Training
Range,
Nevada,
United
States;
A
military
base
in
Nevada,
where
advanced
military
aircraft
are
developed;
foreign
military
aircraft
are
evaluated;
and
rumored
to
be
where
the
US
government
hides
extra-planetary
alien
visitors.
danger area
protected area
noun
equal-area
adj
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