Calcomp
[美]数控绘图机
🗣️ 情景例句
He'll be fine, Marilyn.
他不会有事的 ，Marilyn。
I'm not accustomed to going out after dark.
我不习惯在天黑了以后去外面。
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。