The term 'cardboard city' was coined to describe communities of homeless people living in cardboard boxes.

人们创造了cardboard city一词，用来指居住在纸板棚屋里无家可归者的居住区。

《牛津词典》

Theyre packed in cardboard boxes.

它们用纸板箱包装。

youdao

Breakfast cereals almost always come in cardboard boxes containing a plastic cereal bag.

早餐谷类几乎总是出自有塑料谷物袋的纸箱中。

youdao

The first test involved only the canisters wrapped in plastic bubble wrap and packed in cardboard boxes.

CNN: Main banner

Buyers sent him checks, and Martin (still too young to shave) mailed out guns in cardboard boxes.

FORBES: Trigger-Happy

But the digital nature of that data makes it much easier to sift through and analyze than, say, a bunch of files packed in cardboard boxes.

CNN: Technology - Scholars begin autopsy of dot-com era