The local hotdog stand is a fixture on city squares throughout the old center, serving a variety of hotdogs and pickled side dishes.
当地的热狗摊是老城区中心广场上的固定摊位，供应各种热狗和腌配菜。
2
But suppose we were to run this code on the tree shown in Figure 1, where the branches are represented as circles, with their values in the center, and the leaves are represented as squares.
但是假设我们要在图1所示的树上运行这段代码，其中树的分支都用圆形表示，值在中心，叶子用正方形表示。
3
The local hotdog stand is a fixture on city squares throughout the old center, serving a variety of hotdogs and pickled side dishes with a warm corner-meeting-place atmosphere.
在维也纳，热狗摊是整个老城区中心广场的固定设施，它们提供各种热狗、腌渍小菜，很适合周围温暖的气氛（with a warm corner-meeting-place atmosphere）。