1 . 图层
enhancing forms and pages with layers., 建立具有图层的表单与网页.
2 . 多层
layersof ice cream and syrup and whipped cream .多层冰淇淋、糖浆和搅打奶油。
3 . 菜单
PAINTER 技巧集合帖 ... 【Color Management】(颜色管理) 4.【Layers】(图层)菜单 【New Layer】(新图层).
4 . 一层层
or it might be something driven by a long-term change , such as the build-up of greenhouse gases ( or , conceivably , layersof sooty smog ) .也可能是由某种长期变化导致而成,比如积聚的温室气体(或可以想象成笼罩上了一层层的烟雾)。