- n. 覆盖图；覆盖物
- vt. 在表面上铺一薄层，镀
1. over- "above" + lay "放置，铺设，覆盖，涂抹，涂覆".
- overlay (v.)
- "to cover the surface of (something)," c. 1300, in part from Old English oferlecgan "to place over," also "to overburden," and in part from over- + lay (v.). There also was an overlie in Middle English, but it merged into this word. Similar compounds are found in other Germanic languages, such as Gothic ufarlagjan. Related: Overlaid; overlaying.
- overlay (n.)
- in the printing sense, 1824, from overlay (v.). Meaning "transparent sheet over a map, chart, etc." is from 1938. In earliest noun use it meant "a necktie" (1725).
- 1. Silver overlay is bonded to the entire surface.
- 2. An overlay of wood covers the brick wall.
- 3. There can be an emotional overlay to the frustration of solving real problems.
- 4. In parallel or concordant bedding the strata overlay each other like pages of a book.
- 5. In 1969 a ( 51 mm ) bituminous concrete overlay was placed on the concrete deck.
[ overlay 造句 ]