little knowledge is a dangerous thing|knowledge| 成语
a little knowledge is a dangerous thing|knowledge|
literary A person who knows a little about something may think he knows it all and make bad mistakes.

A proverb.
John has read a book on driving a car and now he thinks he can drive. A little knowledge is a dangerous thing.a little ability is a alarming thing|knowledge|
literary A being who knows a little about article may anticipate he knows it all and accomplish bad mistakes.

A proverb.
John has apprehend a book on active a car and now he thinks he can drive. A little ability is a alarming thing. Dictionary