call waiting

Word family

ˌcall ˈwaiting noun [uncountableU]

a telephone service that allows you to receive another call when you are already talking on the telephone, without ending the first call 〔电话的〕呼叫等待，来电待接

From Longman Business Dictionary

call waitingˌcall ˈwaiting noun [uncountableU]TELECOMMUNICATIONS

a system that allows you to receive a telephone call, but make the caller wait, while you are speaking to someone else on the telephone

When you are on the phone, the call waiting system lets you know if another call is coming through.

Chinese

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