目的: 探讨单纯鼓室成形术后发生胆脂瘤的原因并提出预防措施.Objective : To investigate the reasons of the second cholesteatoma of postoperative tympanoplasty.目的探讨外耳道胆脂瘤的病因和治疗方法.Objective To study the cause and treatment of external acoustic meatus ch...
The telex chattered all day and night with news bulletins.电传机没日没夜“嗒嗒嗒”地接收新闻稿。Erica was friendly and chattered about Andrew's children.埃丽卡很和气，不停地念叨着安德鲁的孩子们。They chattered away happily for a while.他们高兴地闲扯了一会儿。...
The same old favorites recur year in year out with monotonous regularity.相同的决心以单调的规律年复一年地出现.Well, football, baseball, snooker and ice - skating are my favorites.喔, 足球 、 棒球 、 台球和滑冰是我最喜欢的运动.She is an imperial concubine and...
The soil washed from the hills is silting up the hydroelectric dams.从山上冲刷下来的泥土就要让水电大坝淤塞了。Mud is silting up the stream.泥沙把小河淤塞了.The harbour is slowly silting up.港口正在慢慢地被淤泥堵塞....
In China postman subdues all wearing green color.在中国邮递员都穿绿色制服.He is the God who avenges me , who subdues nations under me.这位神、就是那为我伸冤、使众民服在我以下的.The God who executes vengeance for me, And subdues peoples under me.诗18:47这位...
These derivatives are readily obtained by alkylation of 2 - mercaptopyridine and alkyl halides under alkaline conditions.这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.The different contents of various alkylation products were ob...