司机没有看见拐弯处的停车信号牌。
The driver overlooked the stop sign at the corner .
这是在前院拍的，我在读安全信号牌上的字。
This is in our front yard . I was reading at the security sign .
航空公司的地面工作人员用手持信号牌协助飞行员把飞机停靠在登机口。
Ground personnel from the airline use hand signals to assist the pilot to parking the aircraft at the gate .
信号牌