Optical signal
[计] 光信号
🧩 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
I would also like to learn more about the culture behind the language.
我想学习和了解更多的关于语言之后文化的知识。
I'm sorry. Am I keeping you awake?
对不起。我吵得你睡不着了吗？
I took a burning branch from the fire and went to examine the rock.
我从火堆中拿起一根燃着的树枝，走过去检查那个岩石。