What is the translation of " IT IS DIFFICULT TO KNOW " in Chinese?

• 很难知道
• 很难了解
• 很难得知
• 很难知道是

Examples of using It is difficult to know in English and their translations into Chinese

It is difficult to know how this will end.
很难知道这将如何结束。

With so many possibilities, it is difficult to know where to turn.
有这么多选择，很难知道该在哪里转弯。

It is difficult to know how others see you.
很难理解别人是如何理解你的。

Thus, the survey only bearing damage, it is difficult to know the real cause of injury.
因此，仅调查滑动轴承损伤，很难得知损伤的真正原因。

It is difficult to know what is best.
很难知道什么是最好的。

Thus, the survey only bearing damage, it is difficult to know the real cause of injury.
因此，仅调查水泵滚动轴承损伤，很难得知损伤的真正原因。

It is difficult to know how to proceed.
很难知道如何进行。

Once attitudes begin to change, it is difficult to know what keeps the momentum moving.
一旦态度开始改变，很难知道是什么使动量保持移动。

It is difficult to know what is expected.
很难知道期待什么。

Once attitudes begin to change, it is difficult to know what keeps the momentum moving.
一旦态度开始发生变化，就很难知道是什么让动力继续发展。

It is difficult to know the best course of action.
的很难确定最佳的行动方针。

In some regions, scientists said, koalas' numbers have declined by up to 80%, though it is difficult to know how many remain across Australia.
科学家说，在一些地区，考拉的数量下降了80%，尽管很难知道全澳大利亚还有多少考拉。

Often it is difficult to know when to stop.
总是很难知道什么时候该停下来。

However, since there is no obligation to report such unfavorable treatment, it is difficult to know how this provision is being practised.
不过，由于没有规定报告此种不利待遇的义务，所以很难得知上述规定的实施成效如何。

Sometimes it is difficult to know who to trust.
有时我们很难知道我们能信任谁。

It is difficult to know where to start with this beautiful country.
很难知道从哪里开始谈论这个好人。

This means it is difficult to know what effects it has.
这意味着很难知道它有什么影响。

It is difficult to know what to say to someone like you.
很难知道该向你这样的人说些什么.

Without listening, it is difficult to know what people are thinking.
如果没有沟通，就很难知道别人在想什么。

It is difficult to know much about a person you have only known for a few dates.
很难了解一个你只认识几次的人。

At the present time it is difficult to know the real state of French public opinion.
目前，很难了解法国舆论的真实状况。

It is difficult to know oneself, but it isn't easy to paint oneself either.
一个人很难了解自己，画自己也不容易。

Without structured data, it is difficult to know where to find insights hiding in your unstructured data sets.
如果没有结构化数据，也很难知道在哪里找到的见解躲在你的非结构化数据集。

It is difficult to know who was involved in the killing because it was on the frontlines,” he said.
很难知道是谁参与了杀戮，因为它是在前线，”他说。

People say it is difficult to know yourself- but it's not easy to paint oneself either.”.
一个人很难了解自己，画自己也不容易。

It is difficult to know whether schizophrenia causes certain stresses, or if it happens as a result of them.
因此，很难知道精神分裂症是否会引起某些压力或是否由于它们而发生。

As a result, it is difficult to know how much dark chocolate a person would need to eat to maximize its health benefits.
因此，很难知道一个人需要吃多少黑巧克力来最大化他们的健康益处。

It is difficult to know, however, which of these officially announced exercises correspond to the shots of the Railgun in question.
然而，很难知道这些正式宣布的演习中哪一项与电磁炮射击有关。

For this reason, it is difficult to know how many people have aphantasia, but academics have developed a test using visualisation questions.
由于这个原因，很难知道有多少人患有Aphantasia，但是学者们已经开发了一个可视化的测试。

It is difficult to know, however, which of these officially announced exercises correspond to the shots of the Railgun in question.
但是，很难知道这些正式宣告的演习中哪一项与电磁炮射击有关。