n. 信號,暗號;預兆,征象;動機;導火線;
vt. 向…發信號;用動作(手勢)示意;以信號告知;
vi. 發信號;
adj. 顯著的,優越的;暗號的,作信號用的;
sign記號,信號+al表名詞 → 信號
??? 情景例句
It's bound to happen sooner or later.
這件事遲早要發生。
The bus is bigger than other cars, but too crowded.
巴士雖然比小汽車大,但是太擁擠了。
In the organization of industrial life the influence of the factory upon the physiological and mental state of the workers has been completely neglected.