Wall rock
n. 围岩
🧩 词语组成解析
rock
[rɑk]
n. 岩石，石头;摇滚乐;棒糖;<非正式>宝石（尤指钻石）;
v. 摇晃;摇动;震动;
vi. 演奏摇滚乐;随摇滚乐起舞;
🗣️ 情景例句
I think I did the right thing
我觉得我做了一件对的事
Who wrote that music?
那首音乐是谁写的？
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。