Better that I'd learned to plow or chop cotton like a darky.还不如当初象黑人那样学会犁田、摘棉花呢.A Texas farmer grumbled that he had to plow his field.有位得克萨斯州的农场主嘟嘟囔囔地说,他得耕自己的地.At this time of the year farmers plow their fields.每年这个...
有机物和铀的浸染到处是共同延伸的.The organics and impregnations of uranium are everywhere coextensive.铜浸染在斑岩的细小节理面和裂隙中.The copper is disseminated in small joint surfaces and cracks in the porphyries.这些矿物也浸染在靠近粗玄岩接触带的片岩和角岩片岩中.The mineral...
BPA ( brooks parsimony analysis ) is one of the most popular methods in the study of historical biogeography.BPA ( brooksparsimonyanalysis ) 是历史生物地理学研究的重要分析方法之一,在过去的20年内得以发展和完善....