Dirt and smudges can trap moisture.

污垢和污渍会含有水分。

Eventually, corrugated cardboard struck a fine balance between retaining heat without trapping too much moisture.

最后，披萨店就采用了瓦楞纸板来做披萨盒，既可以保温，又不会让太多湿气留在盒子里。

They're covered in furry lichen, which traps any moisture in the air.

它们被毛茸茸的地衣所覆盖，地衣会吸收空气中的湿气。

That will create a film of water that then if you put a sealant over it, that will trap the moisture from evaporating.

这会形成一层水膜，然后如果你在上面涂上密封胶，就会将防止水分蒸发。

Her inner timesense told her it would soon be night outside, but the cave remained in blackness, shielded from the desert by the plastic hoods that trapped their body moisture within this space.

她的内在时间感告诉她， 外面很快就要入夜了，但洞穴仍然一片漆黑， 塑料罩将他们体内的水分锁在这个空间内， 与沙漠隔离开来。