Backslaps
(backslap 的复数) vt. 拍背以示友好\\nvi. 拍背以示友好
🗣️ 情景例句
A rolling stone gathers no moss.
滚石不能苔。
His job is his whole life.
工作就是它的生命。
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。