偶然: accidental; fortuitous; casu ...曲线: curve; curved line自然曲线球: natural curve偶然误差曲线: curve of accidental errors昂然曲: garra qu偶然: accidental; fortuitous; casual; incidental; occasional; in case of accident; by coincidence; by chance; accidently; by accident; chance; chance to; have a chance to; happen to; it just so happened that ...: 偶然现象 accidental [fortuitous] phenomena; 偶然事件 accident; a chance event; 偶然原因 an occasional cause; 偶然遇见一个老朋友 run into an old acquaintance; meet an old friend by chance; come across an old friend; 偶然相识的人 an incidental acquaintance; 出现这种问题绝不是偶然的。 the occurrence of such things is by no means fortuitous. 我在伦敦一家小店里偶然发现那件古物。 i struck upon that antique in a little shop in london天然曲材: crook (or natural crook); grown; natural crook timber自然曲率: natural curvature(偶然)遇见;(偶然)发现: come across天然曲材长成的: grown偶然, 也许: by chance偶然,碰巧: by chance; bychance偶然,巧合: be coincidental with偶然9: necessity-contingency偶然,或许: perchance偶然;意外: by accident偶然的: accidental; adventitious; aleatory; by accident; casual; causeless; facultative; fortuitous; incidental; occasional; odd; random; scratch; stochastic; tangential; throwaway; unpremeditated偶然地: adventitiously; by accident (=by chance, accidentally); casually; fortuitously; haphazardly; haply; happily; incidentally; occasionally; promiscuous偶然点: accident point偶然间: paris偶然力: accident force偶然论: accidentalism; fortuitism偶然说: casualism偶然性: [哲学] contingency; fortuity; chance; occasionality偶然之: fortuitous