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，并且能至少提前21天购票，我建议你预订往返短途航班。

youdao

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

Whether taking the kids on a road trip to visit family, or getting on a flight to travel in a different province or country, the learning possibilities are endless.

无论是带着孩子自驾游探亲，还是乘飞机去不同的省份或国家旅行，学习的可能性都是无穷的。

youdao

In 1996 Canadian professor David Irvine-Halliday was on a work trip in Nepal when his return flight was canceled.

VOA: standard.2009.12.13

If done just three times a week for two hours a flight--say, a quick trip to Santa Barbara's Elephant Grill for burritos and back--who knows?

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For its part, Eos appears to be overhauling its sales effort. (The company denies this.) One quirky promotion promises a free Apple video iPod for purchasing a round-trip flight by August 31.

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Calculate carbon emissions for a road trip or flight and buy offsets to fund worldwide projects that employ those in poverty, such as tree-planting programmes that hire low-income workers, or projects that help both the poor and the environment by distributing fuel-efficient stoves, as opposed to wood-burning ones used in most homes in developing countries.

BBC: How big is your carbon footprint?