C2 不记得数目;记不清
to not be able to remember how many times something has happened
I've lost count of how many times she's been late for work this month. 我已记不清她这个月迟到多少次了。
I've lost count of the number of patients I've seen with spinal injuries from motorcycling accidents.
There have been so many bottles washed up on the beach, I'm losing count.
She has lost count of the number of times she's seen that show on Broadway.
They have five kids now. Or is it six? I lose count.
See also: count noun (NUMBER)