对他们来说，这是概念上的一次巨大挑战，对我们也是如此。
That is a fundamental conceptual challenge to them, and also to us.
无论如何，再说一次，从概念上说有三个不同种类的积分。
OK, so anyway, again, conceptually, we have, really, three different kinds of integrals.
如果比这还小，则需要新一次的概念更新。
To go smaller than this, though, will require yet another conceptual leap.
许多人一次就能用两分钟做出有影响的事情。 一个多么强有力的概念。
Many people, making a difference two minutes at a time a powerful concept.
对解释一个比较难的概念来说，重复一次还是有帮助的。
The only time repetition is helpful is when explaining a difficult concept.
这是我第一次被介绍给了操作符重载的概念。
That was the first time I was introduced to the concept of operator overloading.
命运：这是《君主论》的关键概念“fortuna”的第一次出现。
thegreatness that Fortune: the firstappearance of the key concept of fortunain The Prince.
第一次这个概念似乎令人费解。
给出了水系统次不利环路概念。
Puts forwards the concept of the second worst loop of water systems.
产品五层次结构理论实际上是一个双向动态的产品概念。
The theory of five product levels is in fact a two -way dynamic product concept.
我第一次提到影响因子的概念是在1955年的《科学》上。
I first mentioned the idea of an impact factor in Science in 1955.
最后一次上课将会有一次开卷考试。 考试包括以往所学内容，但重点放在期中考试后的概念上。
I will hand out a problem that will be due the day of the in class final exam.
最后一次上课将会有一次开卷考试。 考试包括以往所学内容，但重点放在期中考试后的概念上。
I will hand out a problem that will be due the day of the in class final exam.
应用推荐