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National Academy
gen. 国家学院 (美)
earth.sc. 美国国家科学院
libr. 国子监
USA, space 国家科学院
 English thesaurus
National Academy
abbr. NA
National Academy
: 52 phrases in 16 subjects
Animal husbandry4
Automobiles1
Aviation5
Consulting1
Desert science1
Earth sciences13
Economy2
Electronics2
General7
Navigation2
Oil / petroleum3
Space2
Sports1
Technology2
Textile industry2
United States4