the substructure of [noun phrase]
用于指具体或抽象事物的基础部分。
Engineers examined the substructure of the bridge.
工程师检查了桥梁的下部结构。
基础；下部结构；根基
路基；道床；铁路轨道铺设的土石基底。；路基
The supporting part of a structure that forms its foundation, whether physical or organizational.
基础；下部结构；根基。
The supporting part of a structure (either physical or organizational; the foundation).
铁路轨道铺设的土石基底。
The earth or gravel that the railway tracks are embedded in.
The building's substructure is made of reinforced concrete to support the upper floors.
这座建筑的下部结构由钢筋混凝土制成，用来支撑上面的楼层。
用法提示：这里“substructure”作名词，指建筑中承载上部结构的基础部分。
A strong substructure is essential for any bridge that carries heavy traffic.
对于任何承载重型交通的桥梁来说，坚固的下部结构都是必不可少的。
用法提示：“substructure”作名词，表示桥梁承载重量的下部支撑结构。
Engineers inspected the substructure of the old house before approving the renovation.
工程师在批准翻修之前检查了那栋旧房子的下部结构。
用法提示：“substructure”作名词，指房屋的基础构造，是支撑整体的部分。
用于指具体或抽象事物的基础部分。
Engineers examined the substructure of the bridge.
工程师检查了桥梁的下部结构。
强调某物具有支撑性基础。
Every society has a substructure of economic relations.
每个社会都有经济关系的基础结构。
grammar · medium
易错句子The engineers will substructure the bridge.
正确表达The engineers will build the substructure of the bridge.
“substructure”是名词，不能用作动词。正确的表达是使用“build”或“construct”等动词，后接“the substructure of”。
grammar · medium
易错句子The government invested in substructure projects.
正确表达The government invested in infrastructure projects.
“substructure”指建筑物或道路的下部支撑结构，而“infrastructure”指社会的基础设施（如交通、通信等）。此处应使用“infrastructure”。
与 substructure 不同，infrastructure 指社会或组织的整体基础体系，如道路、桥梁等；而 substructure 多指建筑物或系统的下部结构。
与 substructure 相反，superstructure 指建立在基础之上的上层部分；而 substructure 是基础部分。
struct + -ure
structure + -al
infra- + structure
super- + structure
re- + structure
substructur(e) + -al
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