Visible signal
[计] 可见信号, 视频信号
🧩 词语组成解析
signal
['sɪgnl]
n. 信号，暗号;预兆，征象;动机;导火线;
vt. 向…发信号;用动作（手势）示意;以信号告知;
vi. 发信号;
adj. 显著的，优越的;暗号的，作信号用的;
sign记号，信号+al表名词 → 信号
🗣️ 情景例句
on the school board,
在联合校董会中
I left the house at 8 o'clock and got to work at 8:30.
我在8点钟离开了房子并且在8:30上班了。
Once you have decided on your investment aims, you can then decide where to put your money.
一旦你的投资目标确立以后，你就可以决定你的钱投向何处。