be ignorant of

v.

不知道；不识；

Could Competent Speakers Really Be Ignorant of Their Language?
Bank filtration as managed surface-groundwater interaction
Inequality in Sports: Schools Found to Routinely Flout-Or Be Ignorant of -- Title IX Laws
On the Road to Disaster; Drivers 'Ignorant of Alcohol Limits'
The Larger Lessons of the Mexican Crisis Ignorant of the Real Situation in Latin America, the Clinton Administration and American In...
The Tragedy Is That Harry Is Typical of a Generation Ignorant of Our History; COMMENTARY
US junior doctors found to be ignorant of drug companies' tactics
Why are Pastoral Care Workers ignorant of the realities of "brain death"?
Planners are often ignorant of real needs
Generation Ignorant of the King James Bible