[ ǒurán ] 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