天然催化剂的英文

natural catalyst

• 天然:    natural; native; l ...
• 催化剂:    catalyst; catalyti ...
• 天然裂化催化剂:    natural cracking c ...

例句与用法

1. It is nature activator to develop tourism for china has large population and wide range territory
   中国人口众多，幅员辽阔，这时发展旅游业的天然催化剂。