A man in Egypt saved a young boy who fell from a second-floor balcony. Video of the event shows the man rushing quickly to catch the child.
second-floor= 2階の（建物の地上1階の上にある階）rushing quickly to= 〜するために急いで駆けつけること
As the boy fell, he hit a washing line first. The washing line slowed down his fall for a moment.
slowed down= 〜のスピードを落とした、減速させた
This gave the man extra time to react. He caught the child safely before the boy hit the ground.
hit the ground= 地面に衝突する