[ǒu rán]
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 ...
accidental [fortuitous] phenomena
偶然现象
accident; a chance event
偶然事件
an occasional cause
偶然原因
run into an old acquaintance; meet an old friend by chance; come across an old friend
偶然遇见一个老朋友
an incidental acquaintance
偶然相识的人
The occurrence of such things is by no means fortuitous.
出现这种问题绝不是偶然的。
I struck upon that antique in a little shop in London.
我在伦敦一家小店里偶然发现那件古物。