| 单词 | obsolescent |
| 例句 | obsolescent adjective •much of the business etiquette our parents knew is obsolescent:dying out, on the decline, declining, waning, on the wane, disappearing, past its prime, aging, moribund, on its last legs, old-fashioned, outmoded, downlevel, on the way out | obsolete, outdated, out of date, behind the times. |
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