substratum
n. 底层,下层
A substratum of something is a layer that lies under the surface of another layer, or a feature that is less obvious than other features.
...its deep substratum of chalk...
深厚的白垩地层
His recreation of the city is credible, with a substratum of fact to bolster the fiction.
他对该城历史的再现是可信的,虚构的小说情节隐念着一些事实作为支撑。
1. any stratum lying underneath another
His re-creation of the city is credible, with a substratum of fact to bolster the fiction.
他对该城历史的再现是可信的,虚构的小说情节隐念着一些事实作为支撑。
The best nutrition supply was basic substratum mixed with rapeseed cake liquid.
营养供给以基本基质加菜籽饼水液为佳.
The story has a substratum of truth.
这故事有事实的基础.