combination rolling mill practice

例句：

1. 1. The team's performance was a combination of skill and strategy.
   团队的表现是技能和策略的结合。
2. 2. The new product is a combination of old and new ideas.
   新产品是旧思想和新思想的组合。
3. 3. The company's merger with another firm was a combination of economic benefits and strategic synergy.
   公司与另一家公司的合并是经济好处和战略协同的结合。