Sphincterotomy
[医] 括约肌切开术
🗣️ 情景例句
First word ...
第一个字……
Everyone's ready and waiting for you.
大家都好了，就等你啦！
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。