signn.手势；招牌；符号；迹象；正负号v.签；签名；做手势；做标记signed line承保份额sign in ink用钢笔签字Signochrysan.长柄草蛉属sign manualn.亲笔签名；手势signed rank符号秩signwritingn.画招牌；画广告sign design标志设计sign marker正负号标记符signed term有符号项signed real带符号实数