/?e?t?h?n.dr?d ?n?m.b?/in the US, afreephonenumberthatbeginswith 800,providedbycompaniesor otherorganizationsofferingadviceorinformation(美国的)800号码(公司企业或其他提供咨询或信息服务的机构开通的以800开头的免费电话号码)SMART Vocabulary: related words and phrasesCommunications - by telephone
3G
4G
5G
aeroplane mode
airplane mode
area code
autodial
dialling tone
Directory Enquiries
helpline
off the hookidiom
phone mast
pick
picksomeone/somethingup
pocket dial
prank caller
ring
roam
telecoms
telephone
See more results ?(Definition of800 numberfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/800-number##