stratum
US /ˈstreɪt̬.əm/
UK /ˈstreɪt̬.əm/
名詞
1.
地層
one of the parts or layers into which something is separated:
例:
•
The report shows that drugs have penetrated every stratum of American society.
Lingolandでこの単語を学ぶ
地層
one of the parts or layers into which something is separated: