n. 信號,暗號;預兆,征象;動機;導火線;
vt. 向…發(fā)信號;用動作(手勢)示意;以信號告知;
vi. 發(fā)信號;
adj. 顯著的,優(yōu)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
Pardon me.
勞駕。
Do you think you'll be able to go to sleep right away?
你認為你將馬上入睡嗎?
I would keep my mind fresh for reading when I got home formwork Resisting the hypnotizing effect of television, I sat in my room for a few evenings with my eyes glued to book.