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
He's going up the ladder pretty quickly.
他真是平步青云。
By doing we learn.
经一事，长一智。
These are partly a matter of personal circumstances, partly a matter of psychology.
这里一方面是个人所处的环境，另一方面是个心理学的问题。