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
Many residents choose to put their money into the bank.
许多人选择把钱存在银行。
It's fantastic.
那儿棒极了。
Oh, that's my father!
噢，那是我爸爸。