"Happy Teacher's Day" in Engpsh can be expressed as "Happy Teacher's Day".

Teacher's Day is a day to celebrate and appreciate teachers, usually observed on various dates in different countries. It originated as a way to honor teachers and to recognize their important role in society in promoting education and personal growth.

Here are some example sentences in Engpsh and their translations in Chinese:

"Wishing all the teachers a happy Teacher's Day!" (祝所有的老师们教师节快乐！)
"Thank you for your hard work and dedication to your students." (感谢您为学生们付出的辛勤工作和奉献精神。)
"You have made a positive impact on so many pves." (您对很多人的生活产生了积极的影响。)