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the respiratory tract is an important portal of entry for respiratory viruses.
呼吸道是呼吸道病毒入侵的重要门户。2.Some such as influenza viruses and rotaviruses produce disease at the portal of entry and have no necessity for further systemic spread.一些病毒如流感病毒和轮状病毒在入侵的部位引起疾病而不需要系统的播散。
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同心圆和螺旋图指出了此地的漩涡入口，也就是土著人所称的灵性世界的入口。
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The respiratory tract is an important portal of entry for respiratory visuse s.
呼吸道是呼吸道病毒入侵的重要门户.
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- 相关词组
- department of chemistry化学系；化学
- common run of men普通人；凡胎浊物
- at the word of command一声令下;一听到命令声
- axial moment of inertia轴向惯性矩;
- A beacon fire is found everywhere -- in time of trouble烽烟遍地
- audit of financial statements财务报表审计;
- axis of symmetry对称轴;
- axis of gravity重力轴;
- the fruit of large Chinese hawthorn红果
- manual removal of placenta人工剥离胎盘术
- be full of wit and humor充满智慧和幽默；逸趣横生
- sacrifice clarity in the use of wrong words for expression以词害意
- It is hard to escape the net of justice法网难逃
- centre of attraction吸引中心；引力的中心
- avail oneself of利用;乘;趁;假;
- the child is father of the man三岁看到老；儿童乃是成人的父亲
- axis of level水准漆；水准轴；水准管轴
- modes of life and relation to their environment生态
- United States of American. 美国，美利坚合众国;
- aware of意识到，知道;
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- mh abbr.Marshall Islands 马绍尔群岛（两个字母的州或领地缩写）;method 方法n.装卸机械化；脱皮激素；磁头
- after all 毕竟;究竟;归根结底;（解释或说明理由）别忘了;
- tomorrow adv. 在明天，在明日;n. 明天;最近，不远的将来;
- unfold vt.& vi.展开，打开;vt.摊开;展现，披露;
- nursing n.护理，看护;养育;v.护理( nurse的现在分词);照料;喂;吃奶;
- suddenly adv.意外地，忽然地;出乎意料;霍然;
- impression n.印象;影响;印象画;感觉;滑稽模仿;外观;压痕;重印本;
- surname n.姓，姓氏;别名，绰号;vt. 给……起别名；给……姓氏
- ddu abbr.data diagnostic unit 数据诊断单元;data display unit 数据显示单元;design diagnostic unit 设计诊断单元;distribution data unit 发布数据单元;
- gradual adj.逐渐的;平缓的;
- home n.家;家庭;家庭生活;终点;adj.家庭的;家用的;本地的;本部的;
- broken adj.破碎的，打碎的;（腿，臂等）已骨折的;（线条）虚线的，断续的;被打断的;v.打破，折断(break的过去分词);打破（纪录）;损坏;
