Test signal
[电] 试验讯号
🧩 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
Look, this way. Yes, that's right. Now let's try some of this chicken.
请看，这样。对，完全正确。来吃点鸡肉。
To drop
掉下
When he was decorating his house, he had gotten the bedroom painted first.
他装修房子时，先刷了卧室。