| 词汇 | outlive-usefulness |
| 释义 | outlive your usefulnessidiom to no longer be useful: 不再有价值；已没用 This old system has outlived its usefulness.这个老系统已经没用了。 Useless and futile adrift aimless aimlessly aimlessness airy-fairy fruitless fruitlessly fruitlessness futile futilely negate negation no goodidiom non-viable nugatory unrealistic unrealistically unseriousness until you are blue in the faceidiom unviability |
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