Strata eboris
[医] 象牙质, 牙质
🧩 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
Dad.
爸爸。
I must play my spare time well, or I end up doing nothing.
我必须善于利用空闲的时间，否则生命将会在无所事事中告终。
When she reached home, she had a short rest and a glass of water.
到家后她休息了一阵子，喝了一杯水。