Final answer:
The translation of the given sentence into German and the explanation of the subject.
Step-by-step explanation:
The translation of "The mail carrier (male) loves our friends" into German is "Der Briefträger (männlich) liebt unsere Freunde." In this sentence, the subject is "Der Briefträger," which means "the mail carrier" in English. The subject is a noun and it is in the nominative case.
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