我国西部地区海拔较高，最高的机场位于稻城亚丁，标高4441米，也是世界最高的机场。东航安全管理教员钟文彬告诉《中国新闻周刊》，高原地区空气相对平原较为稀薄，飞机所需的升力对应的速度会更大一点。因此，遇到气流不稳时，颠簸也会更大，瞬间出较大偏差的可能性会比较大。

“No,” said Poirot, shaking his head, “into that of the Dr. Ames.”

arrangement adapted for ready reference. It is true that the botanists of the 17th century and Linnaeus himself often spoke of facility of use as a great object to be kept in view in constructing a system; but every one who brought out a new system did so really because he believed that his own was a better expression of natural affinities than those of his predecessors. If some like Ray and Morison were more influenced by the wish to exhibit natural affinities by means of a system, and others as Tournefort and Magnol thought more of framing a perspicuous and handy arrangement of plants, yet it is plain from the objections which every succeeding systematist makes to his predecessors, that the exhibition of natural affinities was more or less clearly in the minds of all as the main object of the system; only they all employed the same wrong means for securing this end, for they fancied that natural affinities could be brought out by the use of a few easily recognised marks, whose value for systematic purposes had been arbitrarily determined. This opposition between means and end runs through all systematic botany from Cesalpino in 1583 to Linnaeus in 1736.

　　新冠状病毒感染的发病机理还研究得不够。有关2019-nCoV病毒的免疫持续期和抵抗力数据目前还是空白。人们在感染冠状病毒“家族”的其他病毒之后，免疫力抗体不稳定，并且可能会出现二次感染。”（总台记者 宋一平）

　　据了解，针对此次这次东京奥运会体操测试赛，日本与国际奥委会也协商制定了严格的防疫措施，包括运动员在抵达日本前需隔离两周，在住宿旅馆和运动场馆之间移动必须使用经过特殊消毒的公共汽车，工作人员将接管运动员的购物要求，酒店电梯处都会安置保安等。

"You know your husband hates him," said Mrs. Greaves bluntly, "so your conscience can't be completely clear."

not exactly regard as a misfortune, and in the interests of the reader it is rather an advantage; for, in accordance with the objects of the ‘General History of the Sciences,’ this History of Botany is not intended for professional persons only, but for a wider circle of readers, and to these perhaps even the details presented in it may here and there seem wearisome.

[103]

　　凡事我们要辩证统一地看，这样的安排有好处，但也造成了问题。也就是，地方的一个机构、一个部门，要同时对上负责，还要同时对地方负责。如果地方应急的时候出现了很多命令，他就要考虑这个命令，是不是跟我上面的要求打架，他就容易配合衔接不起来。

"I could see that mademoiselle was having difficulty swallowing," he replied, keeping them moving. "Pardon me for feasting my eyes on your lovely throat."

1.　　确实，职业教育直接对标就业。不过，一位高职院校校长此前向中国新闻周刊指出，我们现在的专业设置不是来自于企业真正的需求，或者说不是针对企业的需求来设定专业，而是依据我们的专业目录，是“纸面上谈教育”。

2.58

>