Strata externum
[医] 外层
🧩 词语组成解析
strata
['streitə]
n. 地层;岩层( stratum的名词复数 );地层;社会阶层;
🗣️ 情景例句
Are you going to attend graduate school?
你想读研吗？
Better an egg today than a hen tomorrow.
前程虽远大，现实尤可贵。
I suggest you go up to our next higher price level.
我建议您采用我们价格再高一级的货