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
In addition, it's great exercise too, since we do a lot of hiking.
还有,那也是个好的运动,因为我们要长距离徒步旅行。
How did he get away with cheating?
他是如何考试做弊而未被发现?
The administrative overheads of a business are low to the extent that everyone working in the business can be trusted to behave in a way that best promotes the interests of the firm.