Four-wire system
[计] 四线系统
🧩 词语组成解析
four
[fɔr]
num. 四;四个;第四;
n. 四的;四个一组之物;
wire
['waɪɚ]
n. 金属丝;电线;电报;（木偶的）牵线，操纵绳，背后操纵的势力，秘密引线，秘密策略;
vi. 拍电报;
vt. 拍电报;给…装电线;
🗣️ 情景例句
Food is necessary to maintain life.
食物是维持生命所必须的。
He's a teather.
他是教师。
I'll get another one now, said her mother.Don't worry.
“我这就再去拿一支，”她妈妈说，“别担心。”