Deadheading
(deadhead 的现在分词) n. 免费乘客, 免费入场者
🗣️ 情景例句
Bottle the sound.
将声音装起来呀。
His classical music is so quiet. I can't even hear it!
他的古典音乐幽静得听不见。
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。