Port is what you considered a fortified wine.

波尔图酒所认为的烈酒。

This looks like a dessert wine glass, that you would serve port out of, or fortified wine out of.

这款杯子更用来盛甜酒的杯，比如波特酒或加强酒。

It's wine that's been made, and then you add alcohol to it to fortify the wine.

这已经酿制好的酒，然后在里面加入酒精来强化酒。

Lillet blanc is like a fortified wine.

利莱白酒 (Lillet blanc) 就一种加强酒。