我们在同一家咖啡馆相遇纯属巧合。

It was ___pure coincidence that we met at the same café.

看到惊喜时，她的表情显示出纯粹的喜悦。

Her expression showed ___pure delight when she saw the surprise.

长途徒步后，在湖里泡一下感觉是纯粹的提神。

After a long hike, a dip in the lake felt like ___pure refreshment.