We should buy a good guide book and study it before our trip to Vancouver.

我们去温哥华旅行之前，应该买一本好的旅游指南学习一下。

youdao

I intend to take full advantage of this trip to buy the things we need.

我打算充分利用这次旅行来购买我们需要的物品。

《柯林斯英汉双解大词典》

If you can fly on a Tuesday or Wednesday, and buy your tickets at least 21 days in advance, I suggest you book a round trip excursion flight.

如果你能在周二或周三坐飞机，并且至少提前21天购票，我建议你预订往返短途航班。

youdao

Many wanted to buy the rest of the supplies they would need before they began the trip into Canada.

VOA: special.2009.02.04

The purpose of the trip is to buy the hand-made products of local women and place new orders.

VOA: special.2009.05.04

Generally, it is best to buy trip-cancellation insurance as soon as your itinerary is final, or within seven to 14 days of booking, to maximize your policy protections.

WSJ: Is Travel Insurance Worth the Cost?

On this day, after his morning breakfast trip to buy bread, he goes out again to buy vegetables.

CNN: Syrian blogger: 'I live or die here'

That created a 180-mile round trip to buy wardrobe basics, but it also left a big hole in the town's main drag.

NPR: Rural Co-Ops: Saving Shopping Options