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背单词
heliometer
heliometer
美
英
n.
【天】量日仪
网络
太阳仪;测日计
词形变化
复数:
heliometers
英汉解释
n.
1.
【天】量日仪
英英解释
n.
1.
a
refracting
telescope
with
a
divided
objective
that
is
used
to
measure
small
angular
distances
between
astronomical
objects
or
points
on
the
Moon
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考试词汇表
keep at arm's length
keep bachelor's hall
keep doing something
keep fingers crossed
keep fresh container
keep from the bottle
keep in a cool place
keep in a dark place
keep in contact with
keep in with someone
keep my memory green
keep one's ears open
keep one's eyes open
keep one's hands off
keep one's head down
keep one's pecker up
keep one's trap shut
keep one's wicket up
keep ones nose clean
keep our powders dry