Variable-depth sonar
[电] 可变深度声纳
🧩 词语组成解析
sonar
['səunɑ:]
n. 声呐装置，声呐系统;声呐兵;
🗣️ 情景例句
Thank you, Mr. Levine.
谢谢你， Levine先生。
In college I majored in science, What was your major?
大学时我主修自然科学，你主修什么呢？
When he landed near Dover, the first person to greet him was a local policeman.
当他在多佛着陆后，第一个迎接他的是当地一名警察。