[] paper, plastic or other material that is used for wrapping things in包装材料◆a box covered with plastic wrap用塑料膜包装的盒子●under ˈwraps () being kept secret until some time in the future保密；隐藏◆The development of the new machine was kept under wraps.新机器的开发处于保密状态。bubble wrap gift wrap shrink-wrap