wzrastać w siłę

This makes it easier for them to grow in strength.

Not only that, but it was building up, growing in strength even as he stood there.

The resistance movement was growing in strength and needed to be crushed.

During the next two years the bank grew in strength and size, as did William.

We developed slowly and grew in strength; they must have also.

Once under way, it grew quickly in strength and influence.

His voice was weak when he began, but grew in strength with every word.

She had seemed to be growing in strength, building a wall between herself and the tragedy.

I have tried to combat them for years, but they only grow in strength.

It was icy cold, and seemed to be growing in strength with every moment.