The fog prevented the planes from taking off.

One of the visitors cried out to obstruct the proceedings.

Threats of retaliation are blocking negotiations.

Nothing will hinder her study.

She hindered me in my study.

He is holding up her work.

His ignorance hindered us in our progress.

His lack of technical knowledge precluded him from promotion.

The difficulties of the Japanese language prevent all but a handful of foreigners from approaching the literature in the original.

The noise disturbed his sleep.

The accident held up traffic.

Examinations interfere with the real purpose of education.

Examinations interfere with the real meaning of education.

The bliss was often interrupted by anxiety.

There is nothing to prevent us from going.

The heavy rain prevented them from going there.

The police balked the criminal's escape.

The crowd obstructed the passage.

Nothing can prevent her from marrying him.

If you say that you cannot help doing something, you mean you cannot prevent or avoid it.