在去超市的路上，我偶遇了多年未见的老同学。

On my way to the supermarket, I had an unexpected ___encounter with an old classmate I hadn't seen for years.

警察与逃犯的遭遇演变成了一场激烈的枪战。

The ___encounter between the police and the fugitive turned into a fierce gunfight.

他在旅途中遇到了严重的暴风雨。

He ___encountered a severe storm during his journey.