Staircase signal
[电] 梯形讯号
🧩 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
I have a lot of work to do to get ready for tomorrow.
我得为明天做许多准备工作。
If it were not for hope, the heart would break.
人是靠希望活著的。
You are left-handed, but in this photograph you will see that the young girl is painting with her right hand.
你是左撇子，而在这张照片里，你会发现这个小姑娘正在用右手绘画。