Please flatten all cardboard boxes before putting them in the recycling bin by the copier.

把紙箱放進影印機旁的回收桶前，請先將它們壓平。

The supplier ships every order in double-walled cardboard to prevent damage during transit.

供應商所有訂單都用雙層紙板包裝出貨，以防運送途中損壞。

Our hotel replaced plastic key card holders with recycled cardboard sleeves to cut waste.

我們飯店把塑膠房卡套換成回收紙板套，以減少垃圾。