a motiveless malignity的用法和样例：
- "motiveless malignity";"unprovoked and dastardly attack"- F.D.
注释列句：occurring without motivation or provocation;
- motiveless malignity; unprovoked and dastardly attack- F.D.Roosevelt.
- There is a vein of melancholy in his character.
- There was a long lag in forwarding mail to us.
- A bowl of hot chicken soup is good for you.