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during [during 词源字典]: during: [14] During, like durable [14], durance [15], duration [14], duress, and endure [14], comes ultimately from the Latin adjective dūrus ‘hard’. This goes back to an earlier *drūros, which is related to Irish dron ‘solid’, Lithuanian drūtas ‘strong, solid’, and Sanskrit dāruna- ‘strong, hard’, and links with Irish daur ‘oak’ (a possible relative of druid) and Greek drus ‘oak’ suggest that its original underlying meaning was ‘oak wood’, from which ‘hard’ developed as a metaphorical extension.

The Latin verb dūrāre meant originally literally ‘harden’, but this widened (perhaps with memories of an underlying sense ‘strong, resilient’) to ‘continue in existence, last’. It is these notions of ‘continuance’, ‘strength’, and ‘perseverance’ that emerge in different proportions in durable, duration, and endure, and indeed in during, which is a translation of Old French durant, the present participle of durer ‘last’: phrases such as ‘during the day’ mean etymologically ‘as long as the day lasts’. Durance, an archaic term for ‘imprisonment’, originally denoted ‘length of sentence’, and so is virtually equivalent to the modern ‘for the duration’.
=> durable, duration, duress, endure[during etymology, during origin, 英语词源]
front: front: [13] As its close French relative front still does, front used to mean ‘forehead’. Both come from Latin frōns, a word of dubious origins whose primary meaning was ‘forehead’, but which already in the classical period was extending figuratively to the ‘most forwardly prominent part’ of anything. In present-day English, only distant memories remain of the original sense, in such contexts as ‘put up a brave front’ (a now virtually dead metaphor in which the forehead, and hence the countenance in general, once stood for the ‘demeanour’).

The related frontier [14], borrowed from Old French frontiere, originally meant ‘front part’; its modern sense is a secondary development.
=> frontier
evoke (v.): 1620s, from French évoquer or directly from Latin evocare "call out, rouse, summon" (see evocation). Often more or less with a sense of "calling spirits," or being called by them. Of feelings, memories, etc., by 1856. Related: Evoked; evokes; evoking.
fresh (adj.1): c. 1200, fresh, also fersh, "unsalted; pure; sweet; eager;" the modern form is a metathesis of Old English fersc, of water, "not salt, unsalted," itself transposed from Proto-Germanic *friskaz (cognates: Old Frisian fersk, Middle Dutch versch, Dutch vers, Old High German frisc, German frisch "fresh"). Probably cognate with Old Church Slavonic presinu "fresh," Lithuanian preskas "sweet."

Sense of "new, recent" is from c. 1300; that of "not stale or worn" is from early 14c.; of memories from mid-14c. The metathesis, and the expanded Middle English senses of "new," "pure," "eager" probably are by influence of (or from) Old French fres (fem. fresche; Modern French frais "fresh, cool"), which is from Proto-Germanic *frisko-, and thus related to the English word. The Germanic root also is the source of Italian and Spanish fresco. Related: Freshly. Fresh pursuit in law is pursuit of the wrong-doer while the crime is fresh.
memory (n.): mid-13c., "recollection (of someone or something); awareness, consciousness," also "fame, renown, reputation," from Anglo-French memorie (Old French memoire, 11c., "mind, memory, remembrance; memorial, record") and directly from Latin memoria "memory, remembrance, faculty of remembering," noun of quality from memor "mindful, remembering," from PIE root *(s)mer- (1) "to remember" (Sanskrit smarati "remembers," Avestan mimara "mindful;" Greek merimna "care, thought," mermeros "causing anxiety, mischievous, baneful;" Serbo-Croatian mariti "to care for;" Welsh marth "sadness, anxiety;" Old Norse Mimir, name of the giant who guards the Well of Wisdom; Old English gemimor "known," murnan "mourn, remember sorrowfully;" Dutch mijmeren "to ponder"). Meaning "faculty of remembering" is late 14c. in English.
I am grown old and my memory is not as active as it used to be. When I was younger I could remember anything, whether it had happened or not; but my faculties are decaying now and soon I shall be so I cannot remember any but the things that never happened. It is sad to go to pieces like this, but we all have to do it. [Mark Twain, "Autobiography"]
Computer sense, "device which stores information," is from 1946. Related: Memories.
vivid (adj.): 1630s, from French vivide and perhaps also directly from Latin vividus "spirited, animated, lively, full of life," from vivus "alive," from PIE *gweie- (1) "to live" (see bio-). Extension to colors is from 1660s. Sense of "strong, distinct" (as of memories, etc.) is from 1680s; that of "very active or intense" (as of imagination, interest, etc.) is from 1853. Related: Vividly; vividness.