soil age（土壤年龄）：是指土壤发育、发生的时间的长短。分为绝对年龄、相对年龄。
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absolute age of soil [土壤] 土壤绝对年龄
relative age of soil [土壤] 土壤相对年龄
soil true age 又称土壤真实年龄
early age cement-soil 早龄期水泥土
developing age of red soil 山原红壤发育年龄
·2,447,543篇论文数据，部分数据来源于NoteExpress
N green fodder, esp when freshly cut and fed to livestock in a confined area 青刈饲料
Soil age and the distribution of buried ancient paddy at Chuodun site in Yangtze River Delta were determined using 14C dating and other archeological methods.
方法以绰墩遗址埋藏的古稻田土壤为研究对象，根据14C和考古学方法确定了土壤成土年龄和分布；
youdao
Weather,soil conditions and age will affect the way carrots taste.
VOA: special.2009.02.24
U.S. and global soil moisture improved throughout the 20th century as our planet warmed in its recovery from the Little Ice Age.
FORBES: The Overwhelming Judgment of Science Rejects Obama's Global Warming Claims
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