Stratifications
(stratification 的复数) n. 层化, 阶层的形成, 成层\\n[医] 分层
🗣️ 情景例句
Well, do you have the phone number there?
那么， 有那儿的电话号码吗？
Know something like the palm of one's hand.
熟知其事，了如指掌。
The main school holidays are from mid-December till early February when the days are long and warm.
学校主要的假期从12月中旬起至第二年的2月初为止，这段时间白昼很长，气候也暖和。