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
Please sit down.
请坐下。
I've got no place to go.
天要亡我！
and he estimated that there were more than 2,250,000 in one acre;
他估计每英亩草坪里有225万多只蜘蛛。