Replaceability
更换性, 可代换性, 替换性
🗣️ 情景例句
Good night, Alexandra.
晚安，Alexandra。
Are you watching TV now?
你在看电视吗？
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。