a lucky circumstance

• 一件幸运的事

a lucky circumstance的用法和样例：

例句

1. The lucky undies were hanging in his locker yesterday.
   这件幸运的丁字裤昨天挂在他的置物箱前。
2. You can choose your job, your company, but you can't choose your workmate, so working with nice people is lucky.
   你可以选择工作，可以选择公司，但没法选择同事，所以遇上一群好同事是件幸运的事。