Even oranges don't eat the whole peel, but keep the pith, that white stringy stuff; it's packed with flavonoids.

即使是桔子不能整个的连着皮吃，但至少保留精髓，即白色粘性的东西，它也含有黄酮类化合物。

youdao

Peel the oranges, removing the white pith and slice into 4mm slices.

鲜橙剥皮，撕去白色经络，切成4毫米厚片。

youdao

Don't eat the whole peel, but keep the pith, that white, stringy stuff.

不用把全部的果皮都吃掉，只留住中果皮就可以了，就是果皮中白白的那层。

youdao

Grate the lemon peel into the same bowl, taking care to avoid the white pith.

NPR: 'The Story of Apple Pie'

First, remove the peel and the bitter white pith along with it.

WSJ: Missy Robbins's Sea Bass With Oranges, Olives and Basil | Slow Food Fast