On the day of the accident, my son Gary was roller-skating outside our house.

在出事的那天，我的儿子格雷正在我们家外面滑旱冰。

《柯林斯英汉双解大词典》

This starts your day with a high blood-sugar level, which your body will quickly adjust for and drop, and you’ll be on a roller-coaster blood-sugar ride all day.

这样的早餐开启的将是高血糖的一天，你的身体会迅速调整和下降，而血糖在一天内像过山车似起伏。

youdao

Editor: you remember the day clear. Were you drawing the first series "Roller Coaster"?

艺术经纬：日子记得这么清楚，呵呵，画的第一个是《过山车》系列？

youdao

Stock prices took a roller-coaster ride this week -- down one day,up the next.

VOA: special.2009.08.21

It's been every single day a roller coaster ride because I have a senior in high school.

NPR: Ask Amy: Responding to the Thin Envelope

The latest information emerged Wednesday, a day of roller-coaster emotions in the city where three were killed and more than 175 injured Monday.

WSJ: Obama Attends Boston Service as Officials Probe Videos

" For example, he says, when he officiates at a funeral and a wedding on the same day, the emotional roller coaster is "always challenging.

WSJ: Sometimes, a Second Career Requires a Leap of Faith