我从没想过过了这么多年我们还会偶遇。

I never thought our paths would ___cross again after all these years.

你永远不知道谁可能会偶然出现在你的生命里，并永远改变你的人生。

You never know who might ___cross your ___path and change your life forever.

如果不是偶然遇见了那位科学家，他可能永远也不会做出这项发现。

If his path hadn't ___crossed with that scientist, he might never have made the discovery.