run across

vi. 偶然遇见(不期而遇)

例句与用法：

One day I happened to run across her.

有一天我碰巧见到她了。

Please tell the children to walk calmly across the road, not run across.

请告诉孩子们过马路时要镇静，不要跑着横穿马路。

One day she happened to run across Xiao liu.

有一天她碰巧见到小刘了。

详细释义：

1. 偶然遇到

I ran across an old friend in the street.

我在街上碰到一位老朋友。

2. 穿过(道路)