tissue这个词既是可数名词,也是不可数名词 薄棉纸是不可数 ；

tissue

n. (人、动植物细胞的)组织;(尤指用作手帕的)纸巾，手巾纸;(用于包装易碎物品的)薄纸，绵纸

扩展资料

The woman scrubbed at her face with a tissue.

那女人用纸巾擦脸。

once gangrene has developed the tissue is dead.

一旦出现坏疽，机体组织便已死亡。

Tissue that is removed during the operation is checked for signs ofmalignancy.

检查手术切片，以判断是否为恶性。

Sit your child forward and let the blood drip into a tissue or on to the floor

让你的孩子前倾坐着，让血滴在纸巾上或地板上。