叠盖

bǐ cǐ dié gài de huā bàn

彼此叠盖的花瓣

petals that imbricate each other

dié gài chéng xíng bù fen hóu qiē chú shù

叠盖成型部分喉切除术

partial laryngectomy with imbrication laryngoplasty