Substrata
substratum 的复数
🗣️ 情景例句
We were very young.
我们那时很年轻。
He is also very fond of playing tennis and manages to find time for a game twice a week.
他非常喜欢打网球，每周总要抽时间打两次。
Merry Christmas and best wishes for the New Year!
圣诞快乐，并致以新年的良好祝愿！