Just getting rough direction from the sun is easy.
根据太阳来确定大致方向不难。
Rough turning tools can be right-hand or left-hand types, depending upon the direction of feed.
粗车刀具按其进给方向可以是右手型的或是左手型的。
Recently, it has been a vital studying direction that connecting rough set theory with evidence theory to research the knowledge discovery problem of random information systems.
近年来，将粗糙集理论与证据理论相结合，研究随机信息系统的知识发现问题，成为一个有活力的研究方向。
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