men duō chuān huī de zhì gōng zuò 
nínshìfǒuzàixúnqiú:他们他们多穿灰色的制服工作gèngduōjiéguǒ...
yīngwénjièshì:
  1. n.  Gray-collar (Skilled technicians; employees whose job descriptions combine some white- and some blue-collar duties.)