"It could be taken up by crustaceans like shrimp crabs, things like that which are the base of the food chain and that could be passed up to fish and then mammals and the toxins could be concentrated and that could be harmful to animals that feed on these smaller organisms."

VOA: standard.2010.05.09

That at the base of all societies there has to be a labor system that will support the possibility of Plato.

在所有社会的基础上,必须有一个劳动制度,一个能供柏拉图施展他才华的制度

耶鲁公开课 - 美国内战与重建课程节选

And by nihilism, I mean the view that every preference, however squalid, base or sordid, must be regarded as the legitimate equal of every other.

我所谓的虚无主义,意指所有偏好，无论如何卑鄙，拙劣，或下贱都必需被视为,与所有其它同等合法。

耶鲁公开课 - 政治哲学导论课程节选

But mathematically, we've mentioned this before, log N or really to be precise, log base 2 of N, is the way you express this mathematically.

但从数学上说，之前我们已经提到过了，准确地说是log，N，以2为底N的对数，这就是它在数学上的表示。

哈佛公开课 - 计算机科学课程节选

So I'm first going to compute something base move Think of this as kind of the basis from which we'll be computing the actual move.

所以我先计算叫,的东西，called，the，base，move。,它是我们计算实际值时,用到的初值。

麻省理工公开课 - 计算机科学及编程导论课程节选

The abandonment of such a study or its adulteration for current political purposes would be a terrible loss for all of humanity, and at the base, at the root of that civilization stood the Greeks.

如果出于政治的目的而对此段历史,视而不见甚至完全摒弃,这对全人类,将是一个巨大的损失,追根溯源,这一切都根植于希腊文明

耶鲁公开课 - 古希腊历史简介课程节选

People in serious accidents with their paralysis as the result of the accident, very often, usually-- again, this is all the average-- go back to their base level of happiness: if they are happy before, they will be happy one year after; if they are unhappy, they will remain unhappy.

遇到严重意外的人,意外导致瘫痪，经常地，一般性的…,再次强调，这是平均而言-,都会恢复到基础幸福水平：,他们以前是快乐的，一年后，他们也会快乐;,如果不快乐，将维持不快乐。

哈佛公开课 - 幸福课课程节选

So the access that a cell has to certain kinds of genes, or chemical modifications of DNA, not chemical modifications that change the base pairs, that would be a mutation.

因此细胞变化的途径应该是对某些基因,或者DNA进行化学修饰,不是更改碱基对,更改碱基对就是突变了

耶鲁公开课 - 生物医学工程探索课程节选

This label is DNA that might be made radioactive or made fluorescent, and it has a base pair sequence that is from some other region of the gene that you're interested in.

这种标签就是具有放射性,或者荧光性的DNA,它有一个取自于,你感兴趣的那段基因上,其他位置的碱基对序列

耶鲁公开课 - 生物医学工程探索课程节选

Every cell in your body has exactly the same DNA; that is if I could stretch out all the DNA and look at the base pair sequence, the sequences of bases along all the DNA in your chromosomes, they'd be identical in all the cells.

身体内每一个细胞都有完全相同的DNA,如果我把整条DNA展开,然后检查其碱基对的顺序,你体内每个细胞中染色体上,DNA的碱基对顺序,都是完全相同的

耶鲁公开课 - 生物医学工程探索课程节选