Phaeophyta
[医] 褐藻类
🗣️ 情景例句
Are you sure? But ... OK.
你确定吗？ 但……算了。
I have great difficulty in understanding him.
我觉得很难理解他。
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。