substructure
n
underlying or supporting structure; base or foundation 下部结构; 支撑结构; 基础; 根基. Cf 参看 superstructure 1.
🗣️ 情景例句
Thanks, Grandpa.
谢谢你, 爷爷。
It is never too late to mend.
亡羊补牢,犹为未晚。
Of course, Leon Bagrit could not possibly have foreseen the development of the Internet, the worldwide system that enables us to communicate instantly with anyone in any part of the world by using computers linked to telephone networks.