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vac-ua is vacuum's Plural Form
vacuum
US [ˈvækjum]
UK [ˈvækjʊəm]
adj.
真空的；用以产生真空的；利用真空的
n.
真空；空虚；〈美口〉吸尘器
v.
用吸尘器扫除；用真空干燥机干燥
Plural Form：
vacuums
Plural Form：
vac-ua
Present Participle：
vacuuming
Past Tense：
vacuumed
Synonym
n.
vacuum cleaner
E-C
E-E
n.
1.
真空;空处,空虚,空白
2.
〈美口〉吸尘器
v.
1.
用吸尘器扫除
2.
用真空干燥机干燥
adj.
1.
真空的
2.
用以产生真空的
3.
利用真空的
n.
1.
a
space
that
has
had
all
the
air
and
any
other
gases
removed
from
it
2.
a
feeling
that
something
is
missing
,
or
a
situation
in
which
something
is
missing
3.
a
vacuum
cleaner
v.
1.
to
clean
a
room
using
a
vacuum
cleaner
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