各国体育测验制度经不断修订，已日趋完善。
Sports test systems are often revised and gradually perfect.
教材的使用属性决定教材需要不断修订和再版。
Teaching materials need to be emended and reprinted continuously because of their using attributes.
如前面所提到的，科学真理都是不完整的，并且会根据新的迹象不断修订完善。
As noted earlier, scientific truths are never complete but always subject to revision based upon new evidence.
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