Visual signal
[电] 视觉讯号
🧩 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
Why don't we get in the car and drive home?
我们何不开车回家？
The place is too stony for farming.
这地方太多石块，不适合耕种。
The great cities have been built with no regard for us.
大城市的建设毫不关心我们。