The inescapable conclusion is that these mastodons migrated, making a round trip of more than 400 miles every year.

这些乳齿象每年都进行400多英里的往返迁移。

A round trip ticket between London and New York could set you back $16,000 and that was 20 years ago.

一张从伦敦到纽约的往返机票可能要花掉你16,000美元，而这已经是20年前的事了。

The private companies SpaceX and Boeing will ferry the tourists into orbit with a round trip costing about $58 million.

私企太空探索技术公司（SpaceX）以及播音公司将承载游客进入轨道。往返旅程的成本大约是5800万美元。

You need two of them for a round trip.

你需要两个来回。

It seemed about the same distance as a round trip to Siam.

这似乎与往返暹罗的距离差不多。

Great, then I like a round trip ticket to spring Green please.

很好，那么我想要一张去春城的往返机票，谢谢。

Crane chicks that were only born seven months ago have now completed the first leg of a round trip which they will repeat every year.

仅出生了七个月的幼鹤，现在已完成了往返旅程的第一环节，这个往返旅程它们每年都将重复。

11. Depending on the species and region, this can be a round trip of between one hundred and four hundred meters.

根据种类和地区，这个往返旅程会在100到400米不等。

A round trip, so it is possible that you, like the pilgrims, could have a wild turkey on your Thanksgiving table.

一个往返的旅程 所以你可能会像朝圣者一样 在感恩节的餐桌上有一只野火鸡。

He wrote me back and sent me a round trip Greyhound bus ticket and invited me to come to Montgomery to meet with him.

他给我回信，寄给我一张往返灰狗巴士的车票，并邀请我来蒙哥马利与他见面。

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, but we may not need the return tickets.

如果您可以在周二或周三起飞 并且至少提前21天购买机票 我建议您预订往返短途航班 但我们可能不需要返程机票。