这把刀配有一个皮革刀鞘。

The knife comes with a leather ___sheath.

竹笋的外层有一层坚硬的保护鞘。

The bamboo shoot has a tough protective ___sheath on the outside.

她穿了一条贴身的黑色连衣裙参加晚宴。

She wore a black ___sheath dress to the dinner party.