I think we can manage quite happily on our own.
我想我们自己完全能够应付。
This suggestion did not fit very happily with our existing plans.
这个建议与我们目前的计划不十分契合。
I'll happily help, if I can.
如果我能帮忙，我倒很乐意。
She married the prince and they lived happily ever after.
她与王子成了婚，从此过着幸福的生活。
The children were playing happily with their toys.
孩子们正高兴地玩着玩具。