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verb | adjective | to phrases
upgrade [ʌp'greɪd] v
archit. 加固; 提高 (等级，质量)
econ. 使升级
hydroel.st. 升级
sport. 升晋级
upgrading [ʌp'greɪdɪŋ] v
expl. 选矿
upgraded adj.
el. 升格的; 改进［良］的; 高级的
upgraded: 14 phrases in 8 subjects
Air defense1
Aviation1
Business1
Electronics2
Metallurgy3
Project management1
Space3
Technology2

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