полетят

полетят

"Полетят" means "they will fly."

Here, 'полетят' describes the action of leaves being carried through the air due to wind.

Ветры настолько сильны, что листья полетят по воздуху.

The winds are so strong that the leaves will fly through the air.

In this case, 'полетят' is used to express the inability of paper airplane wings to execute the action of flying.

Если сделать самолет из бумаги неправильно, его крылья не полетят.

If a paper plane is made incorrectly, its wings won't fly.

Here, 'полетят' signifies the expected action of rockets taking off and traveling through space.

Когда ракеты полетят к звездам, человек откроет новый этап в истории.

When rockets fly to the stars, humanity will enter a new chapter in history.