一清二白 perfectly clean ; completely clear

二白杨 Populus gansuensis ; Gansu Poplar

伊丽莎白二世 Elizabeth II ; Queen Elizabeth II ; Her Majesty Queen Elizabeth II

独一无二白咖啡 The Only One White Coffee

伊莉莎白二世 Queen Elizabeth II ; Elizabeth II

蛋白质二硫键异构酶 PDI ; protein disulfide isomerase

蛋白质二级结构 protein secondary structure ; secondary structure of protein ; secondary structure

黑白二值图像 binary image

白光二极管 WLED ; White Light Emitting Diode ; white LED

白金二代 Platinum II ; Lexar Platinum II