and one day the parents rather unexpectedly asked their children

有一天父母有点突然地叫孩子们自己
to take a rickety trolley alone to the seashore.

乘一辆摇摇晃晃的有轨电车去海滩
I wonder why Mother and Father didn't want to come with us.

不知道妈妈爸爸为什么不来
Maybe they don't like this rickety trolley.

或许他们不喜欢这辆摇摇晃晃的有轨电车
"Rickety" is a word here which means

"摇摇晃晃"在这里的意思是
"unsteady" or "likely to collapse at any moment."

"不稳"或"随时可能散架"
Hey, kids! Aren't you going to the Festive Fun Fair,

孩子们你们不去欢乐游乐场吗
with all the jolly rides and games and snacks?

有各种好玩的游乐设施游戏和小零食
"Festive" means "fun."

"欢乐"是"好玩"的意思
We know what "festive" means.

我们知道"欢乐"什么意思
Thank you, but it's a perfect morning to go to the beach.

谢谢但今早的天气很适合去海滩
- It's gray and cloudy. - That's what makes it perfect.

-今天阴沉多云 -所以正合适