To counter these effects on a long-duration mission, say, Mars, astronauts will certainly need to create their own artificial gravity.

比如在火星上，为了在长期任务中对抗这些影响，宇航员肯定需要人为制造重力。

youdao

He suggests that NASA may eventually need to create a new category of astronauts trained for "ultra-long-duration" missions.

他建议国家宇航局应该为“特别长停留”任务创造训练一种新型宇航员。

youdao

Even exercising two hours a day isn't enough to keep astronauts' bones from breaking down during long-duration spaceflights.

即使是每天长达两小时的锻炼也不足以防止宇航员在长期的太空航行中的骨质流失。如何防治？

youdao

"I am particularly concerned by the long duration of unemployment faced by a great number of workers, and the disruptive impact that this long-term unemployment has had, and will have on these workers and their families.

VOA: standard.2009.04.03

Usachev could have an easier time recovering, having spent two long-duration missions on the retired Russian space station Mir.

CNN: Alpha astronauts: Trip to Mars is doable

Atop this vehicle would sit a capsule, called Orion, equipped with the life support technologies able to sustain humans on long-duration missions.

BBC: European tech could propel Nasa's Orion capsule

Only fellow cosmonauts have stayed in space longer, including the long-duration champion, Sergey Avdeyev, who on three missions spent 747 days off the planet.

CNN: Discovery brings home Alpha crew