qīng / xǐ / diàn / fēng / shàn / qián / yí / dìng / yào / xiān / chāi / xià / shàn / yè / bìng / qiē / duàn / diàn / yuán

清洗电风扇前，一定要先拆下扇叶并切断电源。

Before cleaning an electric fan, be sure to remove the blades and cut off the power first.