senior moment
noun/ˌsiːniə ˈməʊmənt/
/ˌsiːniər ˈməʊmənt/
(humorous)- an occasion when somebody forgets something, or does not think clearly (thought to be typical of what happens when people get older)
年长表现（幽默表达，指人失忆、忘事、糊涂的状况） - It was an important meeting and a bad time to have a senior moment.
那是个重要会议，可不能犯糊涂。
- It was an important meeting and a bad time to have a senior moment.