2 尽管存在泄漏和发动机问题，美国宇航局宇航员仍然对波音太空舱的返回充满信心。 2 NASA astronauts maintain confidence in Boeing's space capsule's return despite leaks and engine issues.

2 尽管在任务期间面临泄漏和发动机问题，但美国宇航局宇航员仍然对波音公司的太空舱能够安全返回地球充满信心。 2 NASA astronauts remain confident in Boeing's space capsule's ability to safely return them to Earth, despite facing leaks and engine issues during their mission. 他们的乐观表明，他们相信问题已经得到解决或缓解，可以安全返程。 Their optimism highlights their belief that the issues have been resolved or mitigated, allowing for a secure return journey.