n. 符号, 招牌, 征兆, 正负号, 手势
vt. 签名, 打手势表达
vi. 签名
[计] 正负号; 符号; 符号字符
英文释义
n. a perceptible indication of something not immediately apparent (as a visible clue that something has happened)
n. a public display of a message
n. (medicine) any objective evidence of the presence of a disorder or disease
n. a gesture that is part of a sign language