She served as principal chief from nineteen eighty-five to nineteen ninety-five.

VOA: special.2010.04.09

Self-amortizing means that you're not just paying the interest every year -or every month--you're paying interest plus principal.

分期偿还是指,每年或者每个月,你不仅偿还利息,还要偿还利息加上部分本金

耶鲁公开课 - 金融市场课程节选

They're small molecules that - whose principal function in the body is to carry signals from one cell in the nervous system to another.

它们都是小分子,在体内主要功能是在,神经系统内将信号,从一个细胞传导到另一个细胞

耶鲁公开课 - 生物医学工程探索课程节选

So Principal Trial Attorney Brenda Hollis opened her cross-examination by asking Mr.Taylor: Who is lying?

VOA: standard.2009.11.10

That's because, at the end, if- -suppose you're one month or two months away from the payoff of the mortgage, you don't have any balance left, so the interest that you're paying is -hardly any balance left--is very low and so you're payment is paying off principal, mostly.

这是因为,在最后,如果,假设你还剩1到2个月,就可以还清抵押贷款,那么剩下的贷款余额就很少了,因此你所需要付的利息,将会非常少,因为贷款余额几乎为零,此时你偿还的就主要是本金

耶鲁公开课 - 金融市场课程节选

Elementary school principal Oumar Sow is director of the eco-school program in Gud-Chantier.

VOA: standard.2010.04.01

Core electrons are all those electrons held in really tight with the nucleus in the inner shells, whereas the valence electrons are only those electrons that are in the outer-most shell, or at your highest value of n of the principal quantum number.

芯电子是那些,在内壳层被原子核束缚得非常紧的电子，而价电子只包括,最外层的电子，或者说主量子数，n，的值最大的那些电子。

麻省理工公开课 - 化学原理课程节选

And he said Iran should be able to take advantage of all the opportunities in peaceful nuclear power engineering as long as the principal of non-proliferation of nuclear weapons is adhered to.

VOA: standard.2009.10.13

Remember, I said I'm doing this because I expect to have a hundred pounds-- I said one dollar-- I'm going to have to pay out a hundred pounds because this one-period bond, worth one hundred pounds principal, is coming due so I have to pay it out.

回想一下,我说过我会这么做,是因为我会得到一百英镑,我口误说成了一美元,我将要偿还的数额是一百英镑,因为这张一年期,一百英镑面值的债券即将到期,于是我不得不将其支付

耶鲁公开课 - 金融市场课程节选

Working at the leading edge of research on cellular biology and genetic skin disorders, Fuchs was the first to precisely describe keratins - the principal structural proteins of skin cells - and identify diseases caused by mutations in the keratin gene.

VOA: standard.2010.03.29