今天是我妹妹的4岁生日！虽然我们相差13岁、但是我们关系很好。生日快乐每天开开心心姐姐一直陪

推荐回答

Today is my sister's birthday of four years old.Even though I am 13 years older than her,we have a good relationship. Happy birthday to you! I wish you will be happy everyday and I will be always with you.