它的发病与黄疸型肝炎的前驱期相似.The onset of this disease may resemble the prodromal period of icteric hepatitis.采用硝酸铁、硝酸锌、柠檬酸制备前驱体,在不同加热温度与速率下制备锌铁氧体.The citrate sol - gel synthesis method has been used to prepare zinc ferrite.以硫酸钛作为前驱...
到目前为止，参加测试的有57人，测试结果均呈阴性。So far 57 have taken the test and all have been negative.在多数语言中，形容词的阳性和阴性的拼法略为不同。In most languages adjectives have slightly different spellings for masculine and feminine.在威尔士语和爱尔兰语中，表示“月亮”的词是阴性的...
She has been reliable and punctual.她一直可靠守时。I have to go now because I must be punctual for class.我现在不得不走了,因为我得准时去上课.He stressed the point that we should be punctual.他强调的一点是我们必须准时....
一位富商为他做了保证人.A wealthy businessman has stood bail for him.如果我向银行借一万美元, 你愿意作我的保证人 吗 ?If I try to borrow $ 10 , 000 from the bank, will you be my guarantee?双方都必须有保证人.Both parties had to find sureties....