大多数人一次性花半小时，分四次共两个小时。

Most people spend about half an hour at a time, and two hours total.

youdao

接续下来两个小时的核磁共震治疗。

Two hours of treatment were followed by a trip to an MRI tube.

youdao

接续下来两个小时的核磁共震治疗。

Two hours of treatment were followed by a trip to an MRI tube.

youdao