求翻译：虽然现在不知道如何称呼你们比较恰当，但是，首先非常感谢你们为孩子提供了这次去美国学习的机会，也很感谢你们全家人在未来的日子里对徐宏豪孜孜不倦的教导，在这里我们全家人致以真诚的谢意!作为徐宏豪的父母，孩子能够成为你们家庭一员，这是他的幸运。我们感到万分高兴，再一次衷心的感谢你们给他这次难得的学习机会，更希望他在你们的关爱教导下快乐成长，成为有用的人才。是什么意思？

Although you do not know how to call more appropriate, but, first of all thank you very much for the children to the United States provides the opportunity to learn, and very grateful to your family in the coming days for Xu Honghao tireless teaching, where my whole family extend my sincere thanks!

Although I do not know how to address you, however, more appropriate first thank you very much for your children to go to the United States this time has provided the opportunity to learn, is also very grateful to you all of the family members in the coming days to Xu Wang Hao tireless teachings her

Although it did not know how to call you is more appropriate, but, first of all thank you provides children with a trip to United States learning opportunities, also thank you for the whole family in the coming days on the teachings of Xu Honghao worked tirelessly, we extend our sincere gratitude to