1【长难句】

If it decides in favour, the whole industry will feel the impact, for it will affect not just European airlines but all those that fly into and out of the EU.

2【结构分析】

以连词for为切入点，得到两个并列结构，分别为If it decides in favour, the whole industry will feel the impact和it will affect not just European airlines but all those that fly into and out of the EU。前一分句中，if引导从句If it decides in favour作条件状语，the whole industry will feel the impact是主句。后一分句中，谓语affect的宾语部分使用了not just…but…结构，句末的定语从句that fly into and out of the EU修饰先行词those。生物医学工程考研

3【词汇】

in favor 同意

      Airline 航线

4【参考译文】

如果意见是肯定的，那么整个行业将受到影响，因为它不仅影响欧洲的航线，同样也对到达欧洲和飞离欧洲的航线产生作用。