Caskets
n. 首饰盒, 匣子, <美>棺材( casket的复数形式 )
🗣️ 情景例句
Are you going to attend graduate school?
你想读研吗？
No,that's not my book.
不，那不是我的书。
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。