It had made painstaking efforts towards this goal.
它为该目标付出了艰巨的努力。
However I knew very well that I could not succeed without painstaking efforts.
然而我知道得很清楚我不可能成功没有艰苦的努力。
However, I knew very well that I could not succeed without painstaking efforts.
然而，我清楚地知道，我不能成功的艰苦努力。
In order to transform their environment, he drew up the project with painstaking efforts.
为了改造环境，他苦心孤诣地制定了这个计划。
In order to transform their environment, he drew up the project with painstaking efforts.
为了改造环境，他苦心孤诣地制定了这个计划。
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