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
This is Jack Davis.
我就是Jack Davis。
Out main aim is to please the customers.
我們的目的是讓顧客滿意。
It is true that during their explorations they often faced difficulties and dangers of the most perilous nature, equipped in a manner with would make a modern climber shudder at the thought,