We cannot guarantee adequate supplies of raw materials.

我们不能保证提供充足的原料。

《牛津词典》

We cannot guarantee (that) our flights will never be delayed.

我们不能保证我们的所有航班均不误点。

《牛津词典》

We cannot guarantee the results if you do that.

如果你那样做，我们无法保证结果。

youdao

There were words in there--they said something--of course, we cannot guarantee that they won't go up in value but historically they have always done it or something like that.

他们在文中吹嘘...当然,我们不能保证金币不会升值,但金币的历史行情趋势始终向上

耶鲁公开课 - 金融市场课程节选

We CANNOT guarantee that this software will work after any future updates for the iphone.

ENGADGET: iPhoneSIMfree begins fulfilling bulk orders, apparently will not unlock end users' phones

Due to the high number of e-mails we get we cannot guarantee to publish every single message we receive.

BBC: Your comments

Since most shippers are closed on Christmas eve and Christmas day, we cannot guarantee overnight shipment to you for Christmas day.

ENGADGET: PlayStation 3 charity auction -- 2 days left!