I only saw her once ( ) my stay in America ()里应该填什么介词?

I only saw her once ( ) my stay in America ()里应该填什么介词?
I only saw her once ( ) my stay in America ()里应该填什么介词?

I only saw her once ( ) my stay in America ()里应该填什么介词?
应该是 during 吧 “在.期间 ”
我在美国期间只见过她一次