Sabulum
[医] 脑沙
🗣️ 情景例句
Have a safe trip!
一路平安。
He's the same as always.
他还是老样子。
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。