求翻译：Jim邀请Lily参加他这周的生日宴会，但Lily的父母出差要到下周才回来，爷爷又卧病在床，需要人照顾。再说数学考试又即将来临，因此，Lily无法前去参加生日宴会。Lily感到很抱歉，只好写信辞谢。是什么意思？

Jim invited Lily to attend his birthday party this week, but Lily's parents to travel to next week before I came back, my grandfather and confined to bed, need care. Besides the upcoming math test and, therefore, Lily can not go to a birthday party. Lily was very sorry, had to write politely refuse.

正在翻译，请等待...

Jim invites Lily to participate his this week the birthday banquet, but the Lily parents travel on official business want only then to come back to next week, grandfather is ill in bed, needs the human to look after.Also mathematics test coming soon, therefore, Lily is unable to go to attend the bir

Jim invites Lily to his birthday party this week, but Lily's parents travel will not come back until next week, Grandpa is ill in bed, need someone to take care of. Math test coming, so Lily cannot go to a birthday party. Lily feels sorry, had to write a decline.

Jim invited Lily to attend his birthday party this week, but Lily's parents to travel to next week before I came back, my grandfather and confined to bed, need care. Besides the upcoming math test and, therefore, Lily can not go to a birthday party. Lily was very sorry, had to write politely refuse.