| 例句 |
in vainphrase producing no resultsThey did their best to fix the engine but their efforts were in vain. abortive, barren, bootless, empty, fruitless, futile, ineffective, ineffectual, inefficacious, otiose, profitless, unavailing, unproductive, unprofitable, unsuccessful, useless, vain hollow, idle, meaningless, pointless, valueless, worthlesshopeless, impossible, lost, no-win, unattainableinadequate, insufficient, lacking, wantingcounterproductive no dice, not worth the candle, of no avail deadly, effective, effectual, efficacious, efficient, fruitful, potent, productive, profitable, successful, virtuous meaningful, worthwhileadequate, sufficientapplicable, feasible, functional, practicable, practical, realizable, usable(also useable), workable |