Noun:

1. an Italian title of respect for a man; equivalent to the English `sir'; used separately (not prefixed to his name)

signan.正负号函数signn.手势；招牌；符号；迹象；正负号v.签；签名；做手势；做标记sign reversing反号, 符号变换signed integer带符号整数signing period缔约期间sign designing标志设计sign discovery征兆发现sign consuming符号消费sign selection符号选择sign magnitude符号数值sign algorithm极性算法sign blindness符号盲

1. The Signore rested safely on their couch.
   夫人们很安稳地靠坐在长沙发椅上。