苦心的英文：
painstaking

參考例句：
  • They dig into the history of mankind
    他們苦心研究人類史。
  • The book was the result of ten years' assiduous research.
    那本書是十年苦心鉆研的成果。
  • I saw him puzzle over a math problem.
    我看見他正在苦心思索一道數(shù)學題。
  • Add to that the good war of a born eavesdropper, carefully honed on a lot of strangers in foreign train compartments
    此外，他生就一對善于偷聽的耳朵，經(jīng)過在異國火車車廂里聽眾多陌生人談話的苦心磨練，變得更靈敏。
painstaking是什么意思：
n. 辛苦；勤勉
adj. 辛苦的；勤勉的；小心的
  • The experts did a painstaking sifting of debris.
    專家們對巖屑進行了煞費苦心的研究。
  • Solvable or comprehensible only with painstaking effort.
    難理解的只有經(jīng)過刻苦的努力才能解決或理解的
  • It was this painstaking apprenticeship that gave Van Gogh mastery of painting.
    這種辛勤的練習，使梵高精通了繪畫技巧。
  • His painstaking to attain his goal in life is praiseworthy.
    他為實現(xiàn)人生目標所下的苦功是值得稱贊的。
  • It also meant the beginning of obligation, painstaking, happiness and enjoyment.
    它同時也意味著責任、辛苦、幸福、快樂的開始。

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