Maldonite
黑铋金矿
🗣️ 情景例句
Well, come on, Dad.
好， 来吧， 爸爸。
You've inherited a large estate!
你继承了一大笔遗产嘛！
it is now possible not only to locate a shoal but to tell if it is herring, cod, or other well-known fish, by the pattern of its echo.
不仅能够确定鱼群的位置，而且可以根据鱼群回声的特点分辨出是鲱鱼、鳕鱼，这是人们所熟悉的其他鱼。