Active infrared detection
[电] 有效红外线检波
🧩 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;
infrared
['infrə'red]
adj. <物>红外线的;
n. 红外线;
🗣️ 情景例句
Oh,
噢，
He hasn't answered my letter yet.
他还没有给我回信。
I think you need a number 47. The bus stop is along that road, on the right.
我想你需乘47路车。