struggle on
phrasal verb with struggle verb uk/ˈstrʌɡ.əl/ us/ˈstrʌɡ.əl/
竭力坚持下去，勉强维持
to continue dealing with a difficult situation or to continue doing something difficult
When Bobbie leaves, we'll have to struggle on by ourselves until we find a replacement. 鲍比离开后，我们得努力坚持下去，直到找到接替他的人为止。