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Gearless
[giәlis]
例句:
This
,
in
its
latest
form
known
as
the
gearless
traction
elevator
,
does
away
with
all
intricate
machinery
,
and
yields
a
machine
moving
with
equal
speed
whatever
the
height
.
佚名.
神奇的知识之书
.
手打:特伦斯
