亲爱的老师们同学们，大家上午好！

Good morning, boys and girls. Good morning, dear teachers!

youdao

尊敬的老师，亲爱的同学们：上午好！

Dear teachers and students, Good morning!

youdao

尊敬的老师，亲爱的同学们：上午好！

Dear teachers and students, Good morning!

youdao