sign bit

例句：

1. 1. The company'slogo is a sign of its brand identity.
   公司的logo是其品牌身份的标志。
2. 2. Thepoliceman signed the report with his name.
   警察用他的名字签署了报告。
3. 3. The artistsigned the painting with her initials.
   艺术家用她的首字母在画上签了名。