Active sonar
[电] 有效声纳
🧩 词语组成解析
active
['æktiv]
adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的;
n. [语法]主动语态;积极分子，活跃的人;
sonar
['səunɑ:]
n. 声呐装置，声呐系统;声呐兵;
🗣️ 情景例句
Examinations are at hand.
考试在即。
You're going too far!
你太过分了！
Reporters kept pressing for interviews so lawyers had to be employed to act as spokesmen for the family at press conferences.
由于记者纷纷要求会见，他们不得不请了律师充当他们家的发言人举行记者招待会。