cardboard怎么用
cardboard作名词时是可数名词，复数形式是 cardboards cardboard 美 /ˈkɑːrdbɔːrd/ 英 /ˈkɑːdbɔːd/ 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....