单词	second-grade
释义	second-grade a. 二流
随便看	gradient freeze method gradient freeze technique gradient freezing gradient furnace gradient gel electrophoresis gradient geothermal gradient geothermal tepmerature gradient goethermal depth gradient grid gradient group gradient gun gradient gust gradient hardness gradient hydrophone gradient improvement gradient index gradient index fiber gradient-index fiber gradient-index glass gradient index lens gradient-index media gradient-index microlens array gradient index optic gradient-index profile gradient-index rod lens 惊惶万状惊惶失措惊惶失色惊惶无措惊愕失色惊愚骇俗惊慌失措惊慌失色惊慌无措惊才绝艳铁石人铁石心肠铁矾土铁矿铁砂铁砖铁砚磨穿铁砧铁票铁窗