1·Flooding shaped the outflow channels approximately 3 billion years ago, about the same times as the northern volcanic plains formed.
大约30亿年前，洪水形成了流出通道，大约与北部火山平原形成的时间相同。
2·Even setting aside the unproven hints of ancient oceans, the extent of the outflow channels suggests that a huge total volume of water existed on Mars in the past.
即使不考虑未经证实的古代海洋迹象，流出渠道的范围表明，过去火星上存在着大量的水资源。
3·Outflow channels are probably relics of catastrophic flooding on Mars long ago.
流出通道可能是很久以前火星上发过洪水的遗迹。
4·It is certain to avoid cooling point in the channel, in case some outflow with high boiling point condensate in halfway to affect quantitative results.
务必避免通道中有冷却点存在，否则会使一些高沸点流出物在中途冷凝而影响质谱定量结果。