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Std

US [.es ti 'di]
UK [.es tiː 'diː]
  • abbr.(=standard)
  • Web性传播疾病(Sexually Transmitted Diseases);性病(sexually transmitted disease);标准(Standard)
Plural Form:STDs  
std
n.
1.
性传播疾病(全写为 sexually transmitted disease)the abbreviation forsexually transmitted disease (a disease that is passed from one person to another during sexual activity)
2.
长途直拨电话(全写为 subscriber trunk dialling)the abbreviation forsubscriber trunk dialling (a system of making direct telephone calls over long distances)