無益的英文：
profitless; useless; fruitless; barren; vain; futile; unprofitable; no good; without benefit; all for naught

profitless是什么意思：
a. 無利益的,無益的,浪費(fèi)的
  • Revising the procedure was an entirely profitless exercise.
    對程序進(jìn)行修改是徒勞無功的.
  • Of course Sun fully expects its profitless approach to turn a profit in the end
    當(dāng)然，Sun公司完全期望其無利可圖方式最終會(huì)變得有利可圖。
  • The poor ballet dancer must devote years of incessant toil to her profitless task before she can shine in it
    可憐的芭蕾舞演員必須把多年不斷的辛勞獻(xiàn)給她無益的苦差事，之后她才能在芭蕾上大放異彩。
useless是什么意思：
adj. 無用的；無效的；差勁的，不行的
  • A well devoid of water is useless.
    無水的井沒有用途。
  • Damn this useless typewriter!
    這個(gè)破打字機(jī)真該死!
  • A car is useless without petrol.
    A car is useless without petrol.
fruitless是什么意思：
adj. 無成果的，徒勞的；不結(jié)果實(shí)的

  • It was a fruitless search.
    搜尋工作毫無結(jié)果。
  • So far the search for the missing boy has been fruitless.
    到目前為止，還沒有找到那失蹤的男孩。
  • The years roll by—spend one’s life in fruitless efforts
    歲月蹉跎

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