vallis信息详情
小脑谷
stopcock valve───旋塞阀
valedictory award───告别奖
core values───核心价值观
valved masks───带阀面罩
aestival def───夏令
infinitival clause as subject───不定式主语从句
valves of heart───心脏瓣膜
at the double nice festival───在双喜节上
archival research───文献研究法；档案研究
circumvallation wall───围墙
After several years of painstaking research and debate, NASA scientists whittled down their initial list of over 50 sites to four - Eberswalde Crater, Holden Crater, Mawrth Vallis, and Gale Crater.───在经过好几年的刻苦研究和讨论以后，NASA的科学家已经将他们一开始的50多个登陆点削减到了4个，它们分别是：埃伯斯·沃德环形山、霍尔登环形山、马沃斯山谷以及盖尔环形山。
Two previous Viking landing sites, and now the Pathfinder site at Ares Vallis, all seem to have the same soil.
Choose the larger leaved plants, such as Amazon Sword, Crypts and Vallis which will provide shelter as well as being aesthetically pleasing.
The odd piece of Giant Vallis provides a pleasant diversion from all that rock.