planned overlay

例句：

1. 1. The engineer planned the overlay to be installed over the existing road surface.
   工程师计划在现有道路表面上方安装覆盖层。
2. 2. The construction company was tasked with planning the overlay for the new highway project.
   建筑公司被指派负责为新高速公路项目规划覆盖层。
3. 3. The environmental impact assessment included a detailed plan for the overlay's placement and materials selection.
   环境影响评估详细列出了覆盖层的放置位置和材料选择的计划。