形容词
中文翻译：不感激的
同义词：
['ungrateful', 'disgruntled', 'unappreciative']
例句：
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1.I am not unthankful for the help you've given me.
我对你的帮助并不感激。
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2.The manager was unthankful when he received the bonus.
经理在收到奖金时显得不高兴。
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3. She felt unthankful when she realized how much her parents had sacrificed for her.
当她意识到父母为她牺牲了这么多时，她感到不感激。