形容词
中文翻译：Unknown
同义词：
['melancholic', 'sentimental', 'melancholy']
例句：
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1. The poet's furtive glances betrayed his deep sadness.
诗人忧郁的眼神透露出深深的悲伤。
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2. She was deeply moved by the furtive gestures of her lover.
她被恋人那隐秘的举动深深打动了。
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3. The furtive movements of the thief caught the attention of the police.
小偷隐秘的动作引起了警方的注意。