sign

释义

n. 符号,正负号,手势,迹象,招牌
v. 签，做手势，做标记

例句

1. Dark clouds are a sign of rain or snow.
   乌云是雨或雪将至的预兆。
2. The football team has signed two new players.
   该足球队已签约聘用了两名新队员。