Its exact role in the carcinogenicprocess, however, is still unclear.
但它在致癌过程的确切作用还不十分清楚。
2
Its exact role in the carcinogenicprocess, however, is still unclear.
它在致癌过程中的确切作用还不十分清楚。
3
Disinfection is a very important unit process in water treatment, but the ordinary disinfectant chlorine will produce disinfection by-products which have potential carcinogenic effects.