大量科学研究证实绿茶是提高记忆力的天然催化剂。
I could link you to mounds of scientific studies that confirm green tea as a natural catalyst for improving memory.
将同相催化剂固定化为异相催化剂，同样成为新技术开发的方向之一；天然催化剂对污染物在多介质环境中行为影响的研究近年来也屡有发表。
Immobilizing homogeneous catalysts to heterogeneous ones, and effect of natural catalysts on the fate of pollutants in multi-media environment, also become new directions of this field.
方法是利用一种金属催化剂，将二氧化碳与天然气混合。这种催化剂是他们公司发明并注册的。
It does this by combining CO2 with natural gas in the presence of a proprietary metallic catalyst it has developed and licensed.
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