1.纠纷的,棘手的
2.有节的,有结的;节疤多的
1.difficult to solve or understand
2.knotty wood has a lot of round hard places in it
1.Grcinding cracking of bearing rings is always the knottiest problem to the bearing manufacturers.
轴承套圈的磨削裂纹历来是轴承生产厂家感到最棘手的问题。
2.Sometimes, the knottiest dilemmas, when seen from the systems point of view, aren't dilemmas at all.
有的时候,即使是最两难的矛盾,当我们由系统的观点看来时,便会发现它们根本不是什么矛盾。