vt.

1. 覆盖；铺在……上面；镀
2. 使负担过重；压倒

n.

1. 覆盖物；外罩；镀金
2. 轮廓纸；透明图

v.

1. coat the surface of.
2. lie on top of.
3. (of a quality or feeling) become more prominent than (a previous one).

n.

1. a covering.
   ▸a transparent sheet over artwork or a map, giving additional detail.
2. Computing  replacement of a block of stored instructions or data with another.