敬爱的老师，亲爱的同学们，大家下午好。

Dear teachers and students, good afternoon.

youdao

亲爱的老师们，同学们：大家下午好！

Dear teachers and students, good afternoon.

youdao

亲爱的老师们，同学们：大家下午好！

Dear teachers and students, good afternoon.

youdao