B-y signal
[电] B-Y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
There we go ... will make twenty. Thanks.
你看……加起来正好二十美元。谢谢了。
I couldn't keep the appointment because I was sick.
我不能赴约因为我病了。
It's a small blue case and it's got a zip.
是只蓝色的小箱子，上面有拉链。