例句與造句

1. "' Multi-factor authentication "'( "'MFA "') is a method of computer access control in which a user is only granted access after successfully presenting several separate pieces of evidence to an authentication mechanism  typically at least two of the following categories : knowledge ( something they know ), possession ( something they have ), and inherence ( something they are ).
2. It's difficult to find computer access control in a sentence. 用computer access control造句挺難的