Active system
[电] 活性系统
🧩 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;
🗣️ 情景例句
Have you got time this morning
今天上午你有时间
He who has health, has hope, and he who has hope, everything.
身体好就有希望，有希望就有一切。
the varieties are infinite; but two classes may be roughly seen.
鸟的飞行方式千差万别，但大体上可分为两类。