stratum
['streitəm]
n.地层,阶层
例句与用法:
A sharp ridge with steeply sloping sides, produced by erosion of the broken edges of highly tilted strata.
豚脊丘,陡峻的山脊由于对高斜层破碎山背的侵蚀而形成的陡峭的山背
A problem that cuts across all strata of society
一个影响到一切社会阶层的问题。
词形变化:
详细释义:
n.[C]
1. 层; 地层; (生物的)组织层
We can follow the history of life through the strata.
我们可以通过这一层层的地层跟踪生命的历史。
2. 社会阶层
Tramps are in a low stratum of society.
流浪汉生活在社会的下层。