Economiser
[电] 节热器
🗣️ 情景例句
This is really neat!
太好了
Every tree is known by its own fruit.
观其言行，知其为人。
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。