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
Hello, my name is Robbie Stewart.
喂,我叫Robbie Stewart。
By doing we learn.
经一事,长一智。
Among the different types of bee, it is the honey bee that has most interested scientists because of the language they use to communicate with each other.