arboretum

In fact, some people were assigned to walk in the arboretum during a Michigan winter.

事实上，有些参与者被要求在冬季去密歇根州的植物园散步。

People did the attention task both before and after they took about an hour or so walk in the Ann Arbor arboretum or through downtown Ann Arbor streets.

他们分别被安排在安娜堡的植物园中散步一个小时或者穿越安娜堡的街区，在这前后他们都做了测试。