This is the 5668th most frequent Russian word.
препятствуют
"Hinder" or "obstruct."
In this context, 'препятствуют' means opposing or causing hindrance to an event or activity.
Дождь и сильный ветер препятствуют проведению пикника.
Rain and strong wind prevent the picnic from taking place.
Here, 'препятствуют' is used to express factors impeding progress or ease in an activity.
Сложные задачи зачастую препятствуют быстрому изучению новых тем.
Difficult problems often hinder the quick learning of new topics.
In this instance, 'препятствуют' highlights the role of existing behaviors that obstruct or challenge progress toward objectives.