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
The firm isn't making out as well as was hoped.
公司并不像原来期望的那样进展顺利。
Two dogs over one bone seldom agree.
两狗啃一骨，相持难服输。
A week later, the editor at last received a fax from the journalist.
一周之后，编辑终于接到记者的传真。