Background signal
本底[背景]信号
🧩 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 guess they're trying to set up an appointment for me.
我猜他们正设法给我安排晤谈。
How much for a one-way ticket to shanghai?
去上海的单程票多少钱？
ourselves and the barbarian, ourselves and the pagan, held sway over people's minds.
我们同异教徒之间存在的区别在人的思想中占主导地位，