Pcrf
abbr. parvocellular reticular formation 小细胞性网状结构
🗣️ 情景例句
Hello, ... speaking. Who do you wish to speak to?
喂， 我是……你想找谁？
Are most people against the proposal?
是多数人都反对这个提议吗？
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。