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ADJ-GRADED
高兴的;快乐的
Someone who is happy has feelings of pleasure, usually because something nice has happened or because they feel satisfied with their life.
例句
Marina was a confident, happy child...
玛丽娜是个自信、快乐的孩子。
I'm just happy to be back running...
我很高兴能重新回到跑道上。
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ADJ-GRADED
（时光、地点或关系）令人愉快的，幸福的
A happy time, place, or relationship is full of happy feelings and pleasant experiences, or has an atmosphere in which people feel happy.
例句
Except for her illnesses, she had had a particularly happy childhood...
除了体弱多病外，她的童年特别幸福。
It had always been a happy place...
这里从前一直是个令人愉快的地方。
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ADJ-GRADED
（对情况或安排）满意的，放心的
If you are happy about a situation or arrangement, you are satisfied with it, for example because you think that something is being done in the right way.
例句
If you are not happy about a repair, go back and complain...
如果你对修理效果不满意，可以再找他们投诉。
He's happy that I deal with it myself...
我自己把事情解决了，对此他很满意。
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ADJ-GRADED
乐意的;情愿的
If you say you are happy to do something, you mean that you are very willing to do it.
例句
I'll be happy to answer any questions if there are any...
如果有问题，我很乐意回答。
That's a risk I'm happy to take.
我愿意冒这个险。
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ADJ-GRADED
（表示祝福）…快乐
Happy is used in greetings and other conventional expressions to say that you hope someone will enjoy a special occasion.
例句
Happy Birthday!...
生日快乐！
Happy Easter!
复活节快乐！
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ADJ-GRADED
（巧合）幸运的，令人愉快的
A happy coincidence is one that results in something pleasant or helpful happening.
例句
By happy coincidence, Robert met Richard and Julia and discovered they were experiencing similar problems.
幸运的是，罗伯特碰巧遇到了理查德和朱莉娅，发现原来他们也碰到了类似的问题。