fortuitous
adj. 偶然的,意外的;幸运的
例句
Their success is the result of a fortuitous combination of circumstances.
他们的成功是地利之果。
《柯林斯英汉双解大词典》
Fortuitous happenstance ignits a foray of synergy between the two or the group.
偶然发生的偶发事件点燃两人之间的,或者团队中的协同的变革。
That's where it ends up anyway, and the cost is the same whether forced or fortuitous.
这就是它的最终结果,并且无论是强制的还是偶然的,成本都相同。