big wig

例句：

1. 1. He is a big wig in the industry.
   他在行业中是个大人物。
2. 2. The big wigs were all gathered at the conference.
   那些大人物都聚集在会议上。
3. 3.She was surprised to see a big wig in her office.
   她惊讶地看到办公室里有个大人物。