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
Peak hour traffie like this make traveling to work a real drag.
像这样的交通高峰期使得乘车上班非常缓慢。
It's easy to fall into a trap, but hard to get out again.
堕入陷阱易,脱离陷阱难。
He says nothing about the poor selection of goods in the shops, or about those unfortunate people who have to travel from the country to the city every day to get to work.