on-call
adjective/ˌɒn ˈkɔːl/
/ˌɑːn ˈkɔːl/
[only before noun] (especially North American English)- (of a doctor, police officer, etc.) available for work if necessary, especially in an emergency
(尤指紧急情况下)随叫随到的 - on-call doctors
随时应诊的医生
- on-call doctors