such and such
adjective informal uk/ˈsʌtʃ ən ˌsʌtʃ/ us/ˈsʌtʃ ən ˌsʌtʃ/
（用于不想明确说出的事物）某，某个
used to refer to something that you do not want to name or say exactly
If they tell you to arrive at such and such a time, just get there a couple of minutes early. 如果他们告诉你要在某个时间到，就早到几分钟。