全家人决定去爬山，玩得非常高兴。街上到处都是一片喜庆的氛围。 翻译成英文

The whole family decided to climb a hill. They really enjoyed themselves. It was full of happiness in the streets.

全家人决定去爬山，玩得非常高兴。
The family decided to go climbing and had a wonderful time.

街上到处都是一片喜庆的氛围。
On the street, it was joyous atmosphere everywhere.