The real difficulty is in sticking to this list.

真正难坚持。

This is one of the trickier things to design for.

这是设计的难。

But deciding on what ship to do, that's a challenging aspect.

但难敲定船的样式。

So I would say there are two difficulties here.

我想说这里有两个难。

Yeah, that is always a hard part.

嗯，那直是个难。

This is what makes this question type so difficult.

这就是这个题型的难所。

However, there are two major catches.

但目前有两个难。

There are, of course, knots to be worked out.

当然，这其中有些难需要解决。

The hardest bit of the puzzle is the host-selection process.

问题的难承办权的竞选过程。

What makes it so hard is that you reverse direction on takeoff.

这种跳的难你起跳时要调转方向。

The hardest thing about creating a premium game is marketing.

打造收费游戏的最大难场营销。

Now, the other difficulty here is we have another consonant cluster.

这里的另个难是另个辅音群。

The difficult thing about the pronunciation of this word is the two consonant sounds.

关这个单词的发音难两个辅音发音。

Now the difficulty here again is in the second word.

这里的难又第二个词上。

What's hard is getting people to understand why the ocean matters to them.

难如何让人们理解海洋对人类的重要性。

With that change enacted, there was all manner of good work ready to be performed.

随着这难的解决，各种良性工作都得以开展了。

One challenge of diagnosing celiac disease is that there are no classic signs or symptoms.

诊断乳糜泻的个难是这种疾病没有明显的预示和症状。

So the trouble with gravitational waves is that they're very weak; they're preposterously weak.

研究引力波的难它们太微弱了； 微弱得不合常理。

Getting the necessary technology out to all corners of the globe is part of the challenge.

将必需的技术推广到世界各地是部分难所。

This is one of the difficulties with our sessions, in that you cannot take in concepts directly.

你无法直接领会概念，这是我们课程的难。