in the midst of
If you are in the midst of doing something, you are doing it at the moment.
We are in the midst of one of the worst recessions for many, many years.
我们正处于许多年以来最严重的一次经济衰退。
If something happens in the midst of an event, it happens during it.
Eleanor arrived in the midst of a blizzard.
埃莉诺到达时正下着暴风雪。