light weight sand

例句：

1. 1. The construction crew used light weight sand to build the foundation of the new building.
   施工团队使用轻质沙来建造新建筑的基础。
2. 2. The engineer recommended using light weight sand for the project's drainage system.
   工程师建议使用轻质沙作为项目的排水系统。
3. 3. Light weight sand is ideal for use in landscaping, as it allows for easy transportation and application.
   轻质沙非常适合用于园艺，因为它便于运输和施用。