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
You've got the facts wrong.
你把事实搞错了。
By the time we got there,the play had already begun.
等我们到那里，戏已经开始了。
The strike is due to begin on Tuesday.
罢工定于星期二开始，