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Comprehensive English-Chinese Dictionary
- RA
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1.
Regular Army
Collins English-English Dictionary
- RA
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1.
abbreviation for
rear admiral
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2.
abbreviation for
[astronomy]
right ascension
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3.
abbreviation for
(in Britain) Royal Academician or Academy
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4.
abbreviation for
(in Britain) Royal Artillery
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5.
international car registration for
Argentina (officially Argentine Republic)
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