But Hartley 2's nucleus is definitely the smallest one so far, its long axis spanning only about 2 kilometers (1.2 miles).

不过哈雷2号的核心毫无疑问是目前见过的最小的了，它的长轴直径仅约2千米(1.2英里)。

youdao

But the big finding is that the cell nucleus has two compartments-and genes are only active in one.

研究者们的另一重大发现是，细胞核中存在两个间隔区域，而其中只有一个区域的基因是活跃的。

youdao

One eof the most ironic things I see in Russia is commercial companies buying F1 gilts only when their own Nucleus or Multiplication farms break with disease!

我在俄罗斯看到的最讽刺的事情是，一些商业公司只在他们的核心场或扩繁场爆发疾病时才会购买% F1 代后备母猪！

youdao

What I want to point out also is that this h hat, the Hamiltonian operator written out for the simplest case we can even imagine, which is a hydrogen atom where we only have one electron that we're dealing with, and of course, one nucleus.

我也想指出的是，我们能想到的最简单情况,的哈密顿算符，是一个只有一个电子,也只有一个原子核的氢原子。

麻省理工公开课 - 化学原理课程节选

As a relic of that ancestry they still have a few genes of their own and, because each cell has thousands of mitochondria, those genes are easier to find in old samples than are genes from the nucleus, of which there is only one per cell.

ECONOMIST: A new species of human