1. There was a net outflow of about $650m. 净外流量大约是6亿5千万美元。
2. There was a capital outflow of $22 billion in 1998. 1998年的资本外流量为220亿元。
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. 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。
5. 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。
