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noun | adjective | to phrases
useful ['ju:sf(ə)l] n
hydroel.st. 有帮助的
useful ['ju:sf(ə)l] adj.
gen. 有用; 有用〔效，益〕的; 有效率的; 能干的; 对…很熟练的 (at)
agric. 有帮助的 (utilis)
auto. 有用效，益的
econ. 实惠的
el. 有助益的
fin. 可用
hydroel.st. 有用的; 有效的; 有益的; 实用的
useful: 426 phrases in 57 subjects
Agriculture17
Air defense2
Animal husbandry4
Architecture1
Armored vehicles3
Artificial intelligence1
Automobiles25
Aviation13
Bridge card game1
Bridge construction2
Business11
Chemistry3
Chess1
Commerce10
Communications1
Compressors2
Computer numerical control2
Construction1
Desert science2
Drilling3
Earth sciences2
Ecology2
Economy26
Electric machinery12
Electronics19
Engineering geology3
Explosives and Explosive Ordnance Disposal2
Finances5
Forestry1
General9
Hydroelectric power stations12
Information technology4
International Monetary Fund3
International trade3
Mahjong1
Management6
Mathematics1
Metallurgy15
Mining1
Nautical2
Oil / petroleum7
Oil processing plants2
Project management6
Radio1
Rail transport2
Refrigeration4
Reliability1
Securities1
Shipbuilding1
Space13
Technology127
Telecommunications4
Thermal Energy4
Tools1
Transport1
United Nations4
Wind Energy13

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