If my wife takes a second job and leaves the kids in day care, we should be able to get the loan for a two storey place.
如果我的妻子做两份工,把孩子送去全托,我们就可以贷款买一栋两层的房子了。
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。