Backward busying signal
[计] 回程占线信号
🧩 词语组成解析
v. 忙着做某事( busy的现在分词 )
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
Someone told me you're the computer expert around here. Weel, I have a question for you...
有人告诉我你在这里是计算机专家，我有个疑难想请教你。。。
She looks blue.
她满面忧伤。
I'm sorry, but I don't really have much choice.
对不起，我实在没有什么选择余地。