ingratitude造句

His friends were shocked by his ingratitude to his parents.
他对父母不孝,令他的朋友们大为吃惊.

The person always returns ingratitude for kindness.
这个家伙常常恩将仇报.

Ingratitude is a despicable vice.
忘恩负义是可鄙的不道德行为.

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