The mountain peaks recede into the distance as one leaves the shore. 人离岸时,山峰向后退去。 The colleges would recede in importance. 大学的重要性会降低。 Gully 排水沟;山谷 It’s unlikely that this gully was produced by nature. 这个溪谷不大可能是自然出现的。 They clambered up a narrow gull...
A. To explain how water ice is drilled on Mars. B. To tell about the history of water ice drilling techniques. C. To prove the importance of water ice drilling techniques D. To show techniques for drilling water wells in Martian ice exist. 3. On average, how much water does an astron...
Although strong geomorphological evidence for many of these relationships has been apparent for 30 years, its scientific importance has only been recently appreciated because of direct geochemical measurements of water and ice features by surface robotic and orbital instruments.Victor R. Baker...
Scientists conduct field experiments in desert regions because the extremely dry conditions are similar to Mars. Researchers realized the importance of the varnish earlier this year when Bishop and Chris McKay, a planetary scientist at Ames, investigated carbonate rocks coated with iron oxides collected...
But aside from its importance as a resource, the ice also provides scientists with clues about long-term climate patterns on Mars. “If you had a mission at one of these sites, sampling the layers going down the scarp, you could get a detailed climate history of Mars,” said MRO Deputy...
•Therearealreadypartsoftheworldwherewecanseehowlifewouldchange,iftherewerenowater.WecanalsoseeitsomewhatfromsatellitephotosofMars,themoon,andother“dead“spacebodies.Andwecanextrapolatefromthepropertiesofwater,itself,andwhatweknowofitseffectonlife.Waterisaconstantreminderthatliferepeats.It”stheonlyelementthat...
Scientist Carl Agee tells how the meteorite could further the understanding of Mars. Associate administrator John Grunsfeld of the U.S. National Aeronautics and Space Administration (NASA) explains the importance of the finding that water molecules were formed because of contact with water within the...
If humans ever settle on Mars, they will need water. There is just one problem---there seems to be only huge sheets of ice. Luckily, we know how to drill(钻孔) ice for water. Such methods are already used in Antarctica, and researchers now think they could get them to work on the...
A. To explain how water ice is drlled on Mars.B. To tell about the history of water ice drlling techniques.C. To prove the importance of water ice drlling techniquesD. To show techniques for drilling water wells in Martian ice exist.34. On average, how much water does an astronaut on...
It not only makes us think about the importance of water, but also calls on(号召)us to___and protect water. Today, we're facing terrible water problems. Among them, the wastewater problem is rather ___, And the subject of World Water Day in 2017 is “wastewater”.What is wastewater ...