An alarm signal
警报信号
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
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
Unbelievable!
真不敢相信！
Shall I come by early to help you get ready?
我提早一点来，帮忙准备宴会好吗？
Broadly speaking, human beings may be divided into three classes: those who are toiled to death,
劳累至死的人、