doctor的简称是Dr.,口语中也可简称“doc”。

doctor

n.医生;大夫;诊所;博士

v.篡改;伪造;将有害物掺入(食物或饮料)中;阉割(动物)

第三人称单数： doctors

复数： doctors

现在分词： doctoring

过去式： doctored

The new system expanded the role of family doctors.

新体制扩大了家庭医生的作用。

Doctors still don't understand much about the disease.

医生对这种疾病还不太了解。

Doctors still don't understand much about the disease.

医生对这种疾病还了解不多。