数字证书的英文：
digital certificate

digital是什么意思：
n. 键；数字仪表、时钟
adj. 数字的；手指（或足趾）的

digital television display system
数字电视显示系统

parity check digit
奇偶校验位

Are you able to use the digital positioner?
你会用数字式定位器吗？

Many animals have five digits.
许多动物有5趾。

There's a digital watch on the table.
桌子上有一块数字式手表。

certificate是什么意思：
n. 证明书；执照；凭证，单据；证券；纸币
v. 发证书给；用证书批准；用证书证明

gold certificate
金币流通券|金券|金证券

scrap certificate
车辆拆毁证明书

A certificated lawyer.
合格的律师。

The certificate revocation list for this certificate authority that issued this site's certificate has expired.
发出此网站证书的证书权威的证书撤消列表已过期。

Here is the certificate for this Certificate Authority. Examine it carefully.
这里是此