Prebeveling
预开坡口
🗣️ 情景例句
because he didn't want the responsibility of holding them.
因为他不想承担保管它们的责任。
You have also made some readjustment in your import and export business, have you?
你们的进出口贸易也有一些调整，对吗？
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。