Denitrator
n. 除氮器
??? 情景例句
Take it easy!
再見。
Could I have your latest catalogues or something that tells me about your company?
可以給我一些貴公司最近的商品價格目錄表或者一些有關說明資料嗎？
A barking dog doesn't bite!
吠犬不咬人。