by cardboard可数.
cardboard：n.硬纸板，卡纸板(常用于制造盒子)
adj.不真实的虚假的 扩展资料 
He reached into the cardboard box beside him
他把手伸进身边的纸板盒里。
I came home laden with cardboard boxes
我抱着一大堆纸箱回了家。
She would have to wait in the truck， fanning herself with a piece of cardboard
她只得在卡车里等着，用一块纸板给自己扇风
cardboard是可数名词吗
cardboard作名词时是可数名词，复数形式是 cardboards
cardboard
美 /?kɑ?rdb??rd/
英 /?kɑ?db??d/
n.
[纸] 硬纸板纸板箱卡纸板
adj.
不真实的硬纸板制的
双语例句：
We had required a double-layer cardboard box.
我们要求要用一个双层纸板盒。
The company is the largest cardboard producer in the world.
该公司是世界上最大的纸板生产商。