He tried the various almanacs, annuals and gazettes which were held in the library.他试着在图书馆里找过各种历书、年鉴和报纸。Annuals, as a general rule , are very responsive to phosphorus fertilization.通常说来,对一年生植物施用磷肥是相当有效的.Kudzu is a legumi...
Gunpowder is composed of sulfur, carbon, and potassium nitrate.火药是由硫 、 碳和硝酸钾组成.A smell of gunpowder penetrated the woods.森林中弥漫着火药味.Gunpowder was used in China as far back as the 11 th century.远在公元11世纪,中国已使用火药.Gunpowder w...