常见例句Ingratitude is a despicable vice.忘恩負義是可鄙的不道德行爲。It is not only immoral but even a crime to build one's happiness on someone else's misfortunes.把自己的幸福建立在別人的痛苦之上不僅不道德甚至還是一種罪惡。 返回 vice crime