English Version(英文版)
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Gyroscopes
[d'ʒaɪrəskəʊps]
例句:
The
gyroscopes
in
this
,
moved
by
a
gasoline
engine
,
revolved
in
a
vacuum
at
a
speed
of
three
thousand
rotations
a
minute
.
佚名.
神奇的知识之书
.
录入:纳塔莉亚
