Chut
interj. 啧, 咄
🗣️ 情景例句
What is she calling about?
她打来说什么？
What time are you going?
你什么时候走？
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。