Well, it's hard to say, and it's hard to say how long it will take.

嗯，很难说，也很难说需要多长时间。

Well, it's hard to say - Estimate.

噢，这很难说 - 估计一下。

But it's hard to say for sure.

但这很难确定。

It's hard to say which is better.

很难说哪一个好些。

Happen? Jorkens said. That is hard to say.

以前，人们大概还能知道其他国家想干什么以及能力如何，但现在完全不同了。”

It's hard to say goodbye to Hangzhou.

要和杭州说再见很难。

It's hard to say the difference, right?

很难说出区别，对吧？

It is hard to say goodbye.

要说再见真的很难。

How old was it? It's hard to say.

那得放了多久了啊? 这很难说啊。

That's hard to say after what we just saw.

听到刚刚的掌声，这一点就很难说了。