“合法地”常见的英文表达是 legally 或 lawfully。
legally:使用频率较高,强调符合法律规定,在各种语境中都很常用。例如:You are legally required to pay taxes.(你依法有义务纳税。)
lawfully:意思与“legally”相近,但相对更正式一些,常出现在较为严谨的书面或法律相关语境中。例如:The suspect was arrested lawfully.(嫌疑人被依法逮捕。 )