zhè / zhǒng / zhí / wù / gǎn / rǎn / bái / fěn / bìng / hòu / yè / piàn / biǎo / miàn / huì / chū / xiàn / bái / sè / fěn / mò这种植物感染白粉病后,叶片表面会出现白色粉末。After this plant is infected with powdery mildew, a white powder appears on the leaves.