walk-in business/clinic/centre etca business, doctor’s office etc that you can use or go to without having previously arranged a time to do this 无需预约的业务/诊所/中心等walk-in business/clinic/centre etc• The walk-in centre is the result of two years' struggle by an international group of scientists to realise an ideal.
→ walk-in business/clinic/centre etc at walk-in(1)