Muricatin
糙茎牵牛素
🗣️ 情景例句
Call the plumber to fix the toilet.
给水管工打个电话来修理厕所。
Please stop by (drop in) sometime.
请于近日过来坐坐。
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。