earthmann.
英 'ɜːθmæn | 美 'ɝθ,mæn
中文n. 地球人（该词源于科幻小说）
词根词源
earthman (n.)also earth-man, 1860, "a spirit of nature; a demon who lives below the ground," from earth (n.) + man (n.). Science fiction sense of "inhabitant of the planet Earth" first attested 1949 in writing of Robert Heinlein.
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