We have been demanded to spare no pains to finish it.
要求我们不遗余力地完成这项任务。
With this in mind, we will be more determined to make history, to spare no pains for the good of our posterity.
心中存此念，我们将会更坚决地去创造历史，为我们后代的利益而不遗余力。
If I have the opportunity to study in (school name) University, I'll continue to spare no pains to work hard and implement my plan.
如代写申请信果我有机会学习(学校)，我会继续不遗余力地努力工作，实现我的计划。
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