Sadnesses
(sadness 的复数) n. 悲哀, 悲伤
🗣️ 情景例句
I just love mashed potato.
我就是喜欢土豆泥。
Enough is as good as a feast.
知足常乐。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后记录下的是横向波的到达，横向波比纵向波传播得慢，在纵向波到达几分钟后才能到达。