困难

A curve on a surface of revolution , formed by the intersection of the surface with a plane containing the axis of revolution .

为什么我们过去能在非常困难的情况下奋斗出来，战胜千难万险使革命胜利呢

My babi can pronounc thi word without ani difficulty.

孩子读这个词没有任何困难。

So yes, baby-sitting really is harder than I thought.

是的，照看婴儿比我想象的困难的多。

Hardest for me, we have decided to cut back on the number of books we buy.

对于我来说最困难的时候，就是我们决定要减少购书量。

We've broken the back of the problem.

我们已经解决了这个问题的最困难的部分。

But because the backlog of requests is so large, it's very difficult to get off, Steinbock said.

但由于积压的要求是如此之大，它是非常困难的要下车， steinbock说。

Which was the most difficult backstage experience you had?

这是最困难的后台经验，你怎么过的？

I am surrounded by difficulties, by... intrigues, by... backstairs influence, by..

我面临的是重重困难，是……各种阴谋诡计，是……幕后操纵，是……

And this generation does not intend to founder 7 in the backwash of the coming age of space.

而我们这一代并不准备在即将到来的、太空时代所产生的困难面前萎缩不前。

Even those who have difficulty with sterile technique and other bacteriological procedures can generally work with E.

甚至是那些对于无菌技术和细菌学技术有困难的人也可以轻松地进行研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。