1.The value of experiments is not limited to sciences
主语 介词短语做后置定语 be limited to 短语 做谓语 宾语
实验的价值不局限于科学
2 deal with problems more effectively 更有效的处理难题
in their adult years 时间状语
3 The problems( that are created by environmental contamination) are very hard to resolve
主语 限制定语从句 系表结构 不定式做宾补
4 many 是定语
5 millions of 数量词做定语修饰 animals 成百万的/许许多多的动物
6 in public transport 介词短语做定语必须后置,修饰investment 在公共领域增加投资