The creature's face seemed to be protruded, because of its bent carriage.那人的脑袋似乎向前突出, 那是因为身子佝偻的缘故.The naughty boy protruded his tongue and ran away.那个淘气的男孩伸出舌头就跑掉了.The child protruded his tongue.那小孩伸出舌头.The handle o...
氨的合成主要经过四道工序.There are four major steps in ammonia synthesis.试计算氮在尿素及硫酸氨的质量百分率.Calculate the percentage by mass of nitrogen in urea and ammonium sulphate.这种肥料经过化验表明氨的含量很高.Tests of the manure showed a high ammonia content...