快乐 [kuài lè]
happy Except for her illnesses, she had a particularly happy childhood.
除了几场病痛之外，她有个特别快乐的童年
joyful They greeted him joyfully.
他们非常快乐地跟他打了招呼
cheerful He was cheerful and pleasant to the end.
直到最后都很愉快高兴。
gay（不过这个一般说同性恋）
happiness His look of happiness is only assumed
他快乐的样子是假装的。
pleasure Travel gives us a worthy and improving pleasure
旅行给予我们一种高尚有益的快乐。
merry From the house come bursts of merry laughter.
从房子里传出阵阵欢快的笑声。
gladsome
delighted I know Frank will be delighted to see you.
我知道弗兰克见到你会非常高兴。
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