名词
中文翻译：支撑沙
同义词：
['支撑物，支撑材料例句：1. The engineer used a backing sand to level the surface of the road.（工程师使用支撑沙来平整道路表面。）2. The construction crew needed to use backing sand to ensure stability during the excavation process.（施工团队需要使用支撑沙以确保挖掘过程中的稳定性。）3. The builders were using backing sand to create a smooth finish on the floor.（建筑工人正在使用支撑沙来在地板上创造一个光滑的完成面。）']
例句：
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1. The engineer used a backing sand to level the surface of the road.
工程师使用支撑沙来平整道路表面。
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2. The construction crew needed to use backing sand to ensure stability during the excavation process.
施工团队需要使用支撑沙以确保挖掘过程中的稳定性。
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3. The builders were using backing sand to create a smooth finish on the floor.
建筑工人正在使用支撑沙来在地板上创造一个光滑的完成面。