The lower structure layer consists of the Sinian to the Devonian, in which the A-Man low ridge is observed.

下构造层由震旦系—泥盆系构成，所谓阿-满低梁主要即发育于该构造层。

youdao

Excavation was under way on a new trench, on the other side of a low limestone ridge.

NEWYORKER: The Sanctuary

Most Florida mansions at the time were built back from the sea on a low limestone ridge that ran slightly inland from the shore along the coast south of downtown Miami.

WSJ: An American Renaissance Gem

"It's definitely a new low, " says Lan Price, assistant manager of Ridge Crest Memorial Park in Batesburg-Leesville, S.C.

WSJ: Bronze Vases at Cemeteries Become Target for Thieves