During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.
2016年6月六级真题(第三套)阅读 Section C
柯林斯高阶英汉双解学习词典释义
VERB
在…上覆盖(或铺、涂)
If something is overlaid with something else, it is covered by it.
If something is overlaid with a feeling or quality, that feeling or quality is the most noticeable one, but there may be deeper and more important ones involved.
An overlay of wood covers the brick wall.砖墙上覆盖了一层木板。
套图透明膜;上衬
英英词典释义
Noun
1. protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior