We know of the incident but have no further details.

我们听说过那个事件，但不了解更多的细节。

《柯林斯英汉双解大词典》

Scientists say the compound is likely to cause cancer but have no hard scientific proof.

科学家们称这种化合物可能致癌，但是并没有确凿的科学依据。

youdao

This mode is useful in situations where you know when a task starts and stops but have no way of knowing how far the task has progressed.

这种模式在这样几种情形下是有用的，您可以知道一项任务何时开始以及何时停止，但是您没法知道任务进展了多远。

youdao

Also,you can monkey around when you feel like doing something, but have no firm idea of what to do.

VOA: special.2011.03.13

No, no. But if you have a UROP, or you have a sports practice or something, we will allow that.

不行，但是如果你得到本科生研究计划，或者你要进行体育锻炼，我们是能够接受的。

麻省理工公开课 - 固态化学导论课程节选

We have no choice but to understand that Milton's mask is serious business The whole production is one of the utmost seriousness.

我们没有选择只能理解《面具》是件很严肃的事,整个演出都是很严肃的事情。

耶鲁公开课 - 弥尔顿课程节选

"We're considering the issue but have no estimated arrival time, " says spokesman John Heine .

FORBES: Magazine Article

Both men understand the danger, but have no idea what to do about it.

ECONOMIST: Tony Blair and Gordon Brown can't go on like this

That is, they know some of them will be, but have no idea whom.

FORBES: Making Education Miserable