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单词
X-ray astronomer
释义
Definition of
X-ray astronomer
in English:
X-ray astronomer
noun
An expert or specialist in X-ray astronomy.
Origin
1960s
.
Definition of
X-ray astronomer
in US English:
X-ray astronomer
noun
An expert or specialist in X-ray astronomy.
Origin
1960s.
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off the mark
off the pace
off the pace
off the peg
off-the-peg
off the peg
off-the-plan
off the point
off the rack
off-the-rack
off the rack
off the rails
off the record
off the record
off the right track
off-the-road
off the sauce
off the scale
off the scale
off the shelf
off the shelf
off the shoulder
off the subject
off the top of head
off the top of one's head
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更新时间:2026/3/17 1:22:18