By the late eighties their number had grown fourfold.到80年代末的时候，他们的数量已是原来的4倍。For a diagnosis of tularemia you need a fourfold increase in serum antibody levels.要诊断是兔热症,她的血清抗体等级需要有4个部分的增长.Electric hand is basic be electric...
雀麦草到处可以生长,无论是沙漠还是山顶.Cheat grass can grow anywhere from deserts to mountain tops.雀麦不是一种非常常见的杂草,它主要分布在谷类作物中.Chess is not a very common weed and is mainly found in cereal crops.夏季是混播草地中无芒雀麦种群衰退的关键时期.Summer was the pivotal p...
...a plot to dupe stamp collectors into buying fake rarities...诱骗集邮者购买珍稀邮票赝品的阴谋Other rarities include an interview with Presley.其他的稀罕事包括对普雷斯利的采访。We saw all the rarities of Oxford and talked with two or three fellows of c...