OK, sir, just sit tight, and we'll have an ambulance there in about ten minutes.
好的,先生。你就在那边等着,救护车10分钟之内到。
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。