求翻译：虽然爸爸，妈妈常年在外，我们在一起的时间很短，给不了我太多的幸福。但是他们不在，爷爷，奶奶把这些爱给填满了，我好幸福。是什么意思？

Although the father, mother of perennial, our short time together, can't give me so much happiness. But they are not, Grandpa, Grandma loves to fill those, I'm so happy.