Tetrathognathons
第四节颚的
🗣️ 情景例句
the autograph of somebody who may be famous someday.
将来有可能成名的人的亲笔签名。
The accident held the train up for an hour.
那事故使火车延误了一个小时。
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。