Damage was confined to a small portion of the castle.

城堡仅有一小部分受到了损坏。

I have spent a considerable portion of my life here.

我已在这里度过了生命中的大部分时光。

Desserts can be substituted by a portion of fresh fruit.

甜点可以替换成一份新鲜水果。

The portions were generous.

分量很足。