two days - ago/by accident造句

第一個中文意思是，兩天前

造句

Nealy disappeared two days ago， several miles away from any of the fighting.尼利兩天前失蹤了，離任何一個戰場都有幾英里。

by accident中文意思是，偶然意外地

She discovered the problem by accident during a visit to a nearby school.她在去附近一所學校參觀時偶然發現了這個問題。