Bimetallic signal device
[化] 双金属讯号装置
🧩 词语组成解析
a. 双金属的, (金银)复本位制的
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 wish the weather was like this all year.
我希望整年都是这样的天气。
Thank you for your letter.
谢谢你的来信。
and whom I respect, confess at once that they have little idea where they are going when they first set pen to paper.
和尊敬的作家，都立即承认在他们动笔时，不清楚要写什么，怎么写。