Pentazane
吡咯烷
🗣️ 情景例句
OK.
好。
From the mountain, Lenny can look off across the valley.
雷尼可以从那座山眺望谷间远处的那边。
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。