Twenty minutes after leaving France, he was back on terra firma.

离开法国二十分钟后，他成功降落到陆地上。

But how did they make the jump from water to terra firma? Looks like they might have had help-from bacteria.

但它们是如何从水中跳到陆地上的？也许它们是得到了细菌的帮助。

The three returning space travelers came back to terra firma aboard the Soyuz, a Russian spacecraft that's been in use for more than 50 years.

三个返回太空的旅行者回到联盟号上的特拉菲尔玛，一艘已经使用了50多年的俄罗斯航天器。

While there are wonderful places on terra firma that we have yet to fully explore, perhaps the deepest mysteries are to be found offshore.

虽然陆地上有许多我们尚未完全探索的美妙地方，但也许最深奥的秘密要在离岸发现。

Pull the appropriate knob hard and an explosive charge will blast this clear of the fuselage, allowing its canopy to open and carry the aircraft to terra firma.

用力拉动适当的旋钮， 炸药就会将其从机身上炸开，使其座舱盖打开并​​将飞机带到陆地上。

While we're not quite ready to put a person on terra firma, the question we ask today is: why are so many countries interested in going to Mars?

虽然我们还没有准备好将人送上陆地，但我们今天要问的问题是：为什么这么多国家对去火星感兴趣？

Before Koch got back on terra firma, she spoke to CNN's Christi Paul about her accomplishments, and one interesting things the astronaut said about her record is that she doesn't want to keep it.

科赫返回陆地前，她向CNN的克里斯蒂·保罗介绍了自己完成的任务，说到自己的纪录时，有趣的是，科赫说到自己不想保持此纪录。

While building in space may not have any direct impact back here on terra firma, as a display of how it can create sophisticated constructions, this is hard to beat.

虽然在太空中建造可能不会对陆地产生任何直接影响，但作为它如何创造复杂建筑的展示，这是无与伦比的。