祝爸爸妈妈新年快乐用英文表达是Happy new year to mom and Dad.Happy：adj. 感到(或显得)快乐的; 高兴的; 给予(或带来)快乐的; 使人高兴的; 幸福的; 表示祝愿。new year：n. 新年。
相关介绍：
I wish you a happy New Year!
祝您新年快乐！
Happy New Year!
新年好！
With best wishes for a merry Christmas and a happy new year!
恭祝圣诞，并贺新禧！
He wanted to be the first to wish a happy New Year.
他想成为第一个祝大家新年快乐的人。
He looked in every room and wished a Happy New Year to his family.
他看了看每一个房间,祝他的家人新年快乐。
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