2008年，凤凰号火星探测器传回的照片中有经过挖掘土壤而找到的冰块，这在寻找液态水的过程中是一项重大发现——也是生命存在的关键因素。
In 2008, the Phoenix Mars Lander sent back photos of ice chunks it had found after scooping up handfuls of soil, a huge discovery in the search for liquid water — a key ingredient for life.
探测器将借助2.5米长的机械手臂挖掘土壤样本，采集地下冰，或者永久冻土，来研究这个红色星球上是否有生命迹象存在。
The spacecraft will use its 2.5-meter robotic arm to scoop up soil samples and collect underground ice, or permafrost, to see whether there's evidence life ever existed on the Red Planet.
雌性狼蜂掘土蜂在其独特的触角腺里培育共生链霉菌，并将它们分泌到其幼虫的巢房中。
Female beewolf digger wasps cultivate symbiotic Streptomyces bacteria in unique antennal glands and secrete them into their larval brood cells.
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