二的英語翻譯：

twin; two
【計(jì)】 binary-coded decimal; binary-coded decimal character code
binary-to-decimal conversion; binary-to-hexadecimal conversion
【醫(yī)】 bi-; bis-; di-; duo-

次的英語翻譯：

order; second; second-rate
【醫(yī)】 deutero-; deuto-; hyp-; hypo-; meta-; sub-

污染的英語翻譯：

pollute; contaminate; empoison; stain; taint; vitiate
【計(jì)】 fouling
【化】 contaminate; contamination; pollute; pollution
【醫(yī)】 contaminate; contamination; inquination; pollution
【經(jīng)】 contamination