She had an accident with a boat. It was a hit from behind.她遭遇了意外，一艘船撞上了她的背

have an accident出事故(失事)

Be careful if you have an accident I'll be liable.

小心--你要是出事故，我要负责的。

It's now in the process of healing back together.现在我们正全面治疗她的背伤

in the process of在 ... 过程中

It is a leap in the process of cognition.

这是认识过程的一次飞跃。

The car is in the process of repair.

那车正在修理中。

We believe it keeps her fit 我们认为那能让她保持健康

keep fit保持健康

I work out regulary to keep fit.

我经常努力锻炼身体以保持健康。