1. wily old bird; old slicker：领头羊 bellwether | 老油条 wily old bird; old slicker | 绿地覆盖率 forest coverage rate
2. slicker：Nokia is a famous transnational corporation.诺基亚是一家著名的跨国公司. | 19. slicker 老油条 | Slickers are always very cunning.老油条总是很滑头的.
3. sophisticate：老一套的cut-and-dried | 老油条sophisticate | 老于世故的sophisticated
4. Driving Veteran：Reach Driver Level 20 达到车手等级20级 | Driving Veteran 老油条 | Reach Driver Level 30 达到车手等级30级