macadam foundation的用法和樣例：
例句
- The paper mainly expounds essentials for control of cement-stabilized macadam base for construction.
主要闡述了水泥穩定碎石基層施工控制的要點(diǎn)。 - Therefore, he laid a base course of crushed stone on top of a compact footing instead of the costly stone foundation.
因此他就在壓緊的路基上鋪碎石基層，而不使用造價(jià)很高的石塊路基。
