Their success is the result of a fortuitous combination of circumstances.
他们的成功是各种环境因素偶然联系在一起的幸运产物。
You can describe something as fortuitous if it happens, by chance, to be very successful or pleasant. fort= luck 运气 fortune n. 运气;财富
fort 运气 + une → 运气带来财富 → 运气;财富 His socialist views sit uneasily with his huge fortune.
他拥有大量财富,这与他的社会主义观点格格不入。