But we did not see this mutation in the NA of the1918 virus either.

不过，在1918年的病毒中，我们也没有发现这种突变。

youdao

The other mutation with a significant effect on virulence has been seen in the NA gene of two influenza virus strains that infect mice.

另一种对病毒毒性具有重要影响的突变，存在两种感染小鼠的流感病毒株的NA基因上。

youdao

The doublet nature of this and other lines in the na spectrum indicates a doubling of the expected number of states available to the valence electron.

钠光谱中的这条线以及其它线的双重性指出预期价电子可用的状态数是双重的。

youdao

In a criminal complaint filed by a Federal Bureau of Investigations agent, Captain Phillips describes Muse much differently than the na?ve, young boy his mother portrays him to be.

VOA: standard.2009.04.22

DNA goes to RNA, goes to protein, that's it, and that is the way it happens in simple organisms like bacteria.

NA转录成RNA接着翻译成蛋白质,仅此而已,而这仅是细菌那样的简单有机体中的机制

耶鲁公开课 - 生物医学工程探索课程节选

RNA polymerase is smart, it knows where it needs to go in order to make the copy of RNA that's required.

NA聚合酶很聪明,它知道该由什么位置介入,来转录所需要的RNA

耶鲁公开课 - 生物医学工程探索课程节选

Clijsters, who won the U.S. Open in 2005, secured her place in the final after beating third seed American Venus Williams in the fourth round, 18th seed Li Na of China in the quarterfinals and defending champion Serena Williams in the semifinals.

CNN: Unseeded Clijsters secures U.S. Open victory

Of the constituencies named in the review, two are defined in the legislation: Na h-Eileanan an Iar (the Western Isles) and Orkney and Shetland.

BBC: Plan to cut Scottish MPs revised by Boundary Commission

The average wealth and education of voters in the Defence area meant that NA-250 was the place where PTI, which appeals to middle-class and upper-middle-class voters fed up with traditional patronage politics, stood its best chance of winning a seat in Karachi, the country's economic capital.

WSJ: Karachi Killing Shakes District Amid New Vote