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exploit [exploit 词源字典]: exploit: [14] Latin explicāre (source of English explicate and explicit) meant ‘unfold’. A Vulgar Latin descendant of its past participle was *explictum ‘something unfolded’, which passed into Old French as exploit or esplait. In the process, the original sense of ‘unfolding’ had developed through ‘bringing out, development’ and ‘advantage, success’ to ‘achievement’.

In the case of the English noun, it is the latter meaning which has survived, and in fact originally the verb too denoted ‘achieve, accomplish’. This seems to have died out in the 18th century, however, and when the verb reappears in the 19th century it is closer to the earlier ‘develop’ in meaning, particularly as applied to ‘getting the most out of’ natural resources. The modern derogatory sense ‘use for one’s own selfish ends’ emerged from this.
=> explicit, fold, ply[exploit etymology, exploit origin, 英语词源]
human (adj.): mid-15c., humain, humaigne, from Old French humain, umain (adj.) "of or belonging to man" (12c.), from Latin humanus "of man, human," also "humane, philanthropic, kind, gentle, polite; learned, refined, civilized," probably related to homo (genitive hominis) "man" (see homunculus) and to humus "earth," on notion of "earthly beings," as opposed to the gods (compare Hebrew adam "man," from adamah "ground"). Cognate with Old Lithuanian zmuo (accusative zmuni) "man, male person."

As a noun, from 1530s. Its Old English cognate guma (from Proto-Germanic *guman-) survives only in disguise in bridegroom. Related: Humanness. Human rights attested by 1680s; human being by 1690s. Human relations is from 1916; human resources attested by 1907, American English, apparently originally among social Christians and drawn from natural resources.