Pieza
嘴吸口
🗣️ 情景例句
Oh, not at first.
噢， 没有马上找到。
Please sit down and have a glass of milk.
请坐下来喝一杯牛奶。
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。