Port is what you considered a fortified wine.

波尔图葡萄酒是你所认为烈葡萄酒。

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

这款子更是用来盛甜酒，比如波特酒或加强葡萄酒。

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

这是已经酿制好葡萄酒，然后你在里面加入酒精来强化葡萄酒。

Lillet blanc is like a fortified wine.

利莱白葡萄酒 (Lillet blanc) 就是一种加强葡萄酒。