词汇	没有料到的困难
释义	没有料到的困难 unforeseen difficulties
随便看	controlled expansion coefficient alloy controlled expansion nickel-iron alloy controlled-expasion nickel-iron alloy controlled experiment controlled experimental ecosystem controlled experimentation controlled experiments controlled explosion controlled expression Controlled expression of service languages controlled extraction turbine controlled extrahepatic biliary drainage controlled facility controlled factor controlled factors controlled feedback controlled feeding controlled fermentation controlled field controlled field trial controlled fill controlled filter controlled firing area controlled five-bar mechanism controlled flaking