She loved him without knowing that he was a love child.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

He thinks that war is a necessary evil.

This book is a required reading at my school.

His success was an inevitable result.

If the stroke order is incorrect, the characters become difficult to read.

His zodiac sign is Aries.

'匸' is a pictogram from ancient China, representing the concept of enclosing something.