This helps because the plastic cover keeps the stamps off the wet air.
这是有帮助的，因为塑料盖使邮票远离潮湿的空气。
2
One day he took a coveroff a dish.
有一天，他揭开了一个盘子的盖子。
3
She tried to cover her necklace with the collar of her overcoat while she used the other hand to take off both of her earrings and then quickly threw them on the ground.