sad /ˈsæd/ adjective
sadder; saddest
sadder; saddest
Learner's definition of SAD
[also more sad; most sad]
1
: not happy : feeling or showing grief or unhappiness悲伤的；伤心的；难过的 -
He's feeling sad because his pet died.他因为宠物死了而伤心难过。
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People were sad that he was leaving.他要离开了，大家都很难过。
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The experience left her sadder but wiser.这次经历让她吃一堑长一智。
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big sad eyes悲伤的大眼睛
2
: causing a feeling of grief or unhappiness使悲伤的；使伤心的；使难过的 -
Have you heard the sad news about his wife's illness?你听说那个有关他妻子病情的令人伤心的消息了吗？
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It'll be a sad day when you leave us.你离开我们时会是伤心的一天。
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a sad love song令人伤心的爱情歌曲
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a sad poem悲伤的诗
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a movie with a sad ending结局使人难过的影片
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He lived a sad life.他过得很可悲。
3
: causing feelings of disappointment or pity令人遗憾的；令人可怜的；糟糕的 -
The sad fact/truth of the matter is that they are right.这件事令人遗憾的实情是：他们是正确的。
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I live a pretty sad [=pathetic] life. I never go out on the weekend.我的日子过得相当糟糕，周末从不外出。
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The government is in sad [=bad] shape.政府陷入了困境。
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The new version is a sad imitation of the original movie.这部影片的新版本是对原版的蹩脚模仿。
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He's a sad excuse for a father. [=he's not a good father]他不是一个好父亲。
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a sad-looking birthday cake看起来糟糕的生日蛋糕
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We needed more money but, sad to say, there wasn't any.我们需要更多的钱，但很遗憾，一点钱都没有了。
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Sad but true, we couldn't afford to go away for even a weekend at the beach.听起来可怜但却是事实，我们连去海滩度个周末的钱都没有。
— see also sad sack