Desulphurisation
n. 脫硫作用, 除硫作用
??? 情景例句
We want to be sure that you're responsible
我們要確定你是肯負責的，
Did you go to the zoo this morning?
你今早去動物園了嗎？
Ok, look, here are my father and mother.
看，這是我爸爸和我媽媽。