Underlayer
n. 下层, 底层,衬层
🗣️ 情景例句
And I've never been happier, Harry.
我也从来没有这样快乐过 ，Harry。
The wise man has long ears and a short tongue.
聪明人耳朵长，嘴巴短。
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。