谢谢我的宝贝给我精心准备的生日礼物，我特别高兴又欣慰，高兴是孩子长大了懂事了，欣慰孩子知道给我制造惊喜了，谢谢宝贝爱你。
以下是一些感谢儿子或女儿送礼物的短句，供您参考：
1. Thank you so much for the wonderful gift, my dear son/daughter. It means a lot to me to have your love and support.
非常感谢你赠送的精美礼物，我亲爱的儿子/女儿。你的关爱和支持对我来说意义重大。
2. You always know just what to give me and how to make me feel loved, my son/daughter. Thank you for the amazing gift!
你总是知道该给我什么，以及如何让我感受到爱，我的儿子/女儿。谢谢你送给我如此棒的礼物！
3. Your gift was such a thoughtful gesture, my dear son/daughter. I'm so grateful for your kindness and generosity.
你送的礼物非常用心，我亲爱的儿子/女儿。感谢你的善意和慷慨，让我非常感激。
4. I'm so lucky to have a child as wonderful as you, my son/daughter. Thank you for your thoughtful and meaningful gift.
我如此幸运，能有一个像你这么出色的孩子，我的儿子/女儿。感谢你这份深有意义的礼物。
5. Your gift brought a big smile to my face, my dear son/daughter. Thank you so much for always being so thoughtful and considerate.
你的礼物给我带来了灿烂的笑容，我亲爱的儿子/女儿。非常感谢你一直以来如此体贴入微。
总之，无论选择哪种方式表达感谢，亲情的珍贵依旧会传递给孩子，实现相互沟通和感情交流。
