That same secondary task - the grocery list - becomes more of a challenge when driving to a different grocery store using an unfamiliar route.

但是，如果你走一条新路线去不同的超市的时候，脑中处理第二件任务：需要买些什么，则会比较困难。

youdao

I continued northwards on a secondary road winding first through rice paddies and then through rolling hills. It was a wonderful route with very little traffic and avoided both the main highways.

接下来我待在一条次要干道持续往北，迂回过稻田和山谷，这条路很不错，交通很少且让我不用待在主要道路上。

youdao

I wanted to take a secondary route.

我要以次要航线。

youdao

Route 39 said it had spent months researching the work of the best state secondary schools.

BBC: Parents applying to create first free school in Devon