求翻译：今天是我外婆去世的第三年，我和我妈妈一起去拜祭外婆。今天对我们来说是最重要的一天，因为今天也是外婆的生日，妈妈说：”要给外婆磕头。“是什么意思？

Today is the third year of the death of my grandmother, my mother and I went to worship grandmother. Today for us is the most important day, because today is the grandmother's birthday, my mother said: "kowtow to give the grandmother."

Today is the first 3 years of my grandma passed away, I and my mother went to worship her maternal grandmother. For us today is the most important day, because today is my grandmother's birthday, and said to her mother: " to kowtow to her maternal grandmother. "

Today is the third year which my grandmother died, I and my mother do obeisance together offer a sacrifice to the grandmother.Today to us is most important one day, because today also is grandmother's birthday, mother said: ” Must kowtow to the grandmother.“

Today is the third year of the death of my grandmother, I went with my mother worship Festival and Grandma. Today us most important day because today was Grandma's birthday and mother said "must kowtow to grandmother. “

Today is the third year of the death of my grandmother, I went with my mother worship Festival and Grandma. Today is the most important day for us, because today was Grandma's birthday, my mother said: "we should give Grandma kowtow. “