经过他们百折不挠，再接再励的努力，现在终于达到了目的。
The goal has now been finally attained through their dauntless and persistent efforts.
经过多年的努力，他们终于成功培育出了超级杂交水稻。
Finally, they succeeded in growing super hybrid rice after years of efforts.
经过他们一点一滴地不懈努力，委员会消除了一个又一个教义上的分歧，每隔几年还发表一份公文，应该就是文中那无懈可击的话语消除了分歧。
Painstakingly, at snail's pace, the commission took one doctrinal difference after another, and every few years produced a document in impenetrable language that was supposed to have ironed it out.
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