Bobweight
配重, 平衡锤, 秤锤, 铅锤
🗣️ 情景例句
I mean,
我的意思是，
Nothing for nothing and very little for a half penny.
一分钱，一分货。
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。