词汇	茫然凝视；
释义	茫然凝视； a vacant stare;
随便看	manganese steel manganese steel frog manganese-steel frog manganese steel rail manganese steels manganese stress manganese subgroup manganese sub-group compound manganese sub-group element manganese suboxide manganese sulfate manganese sulfate solution manganese sulfide manganese sulfite manganese sulphate manganese sulphate bath calibration MANGANESE SULPHATE MONO manganese sulphates manganese sulphate solution manganese superoxide manganese-titanium manganese tolerance manganese tool steel manganese toxic parkinsonism manganese tricarbonyl