Today, my grandkids will come to our house by train on their own for the first time.
My grandchildren will come to our house today by train by themselves for the first time.
Today, my grandkids will come to our house by train on their own for the first time.
My grandchildren will come to our house today by train by themselves for the first time.
今日孫が初めて2人きりで電車に乗って我が家に来ます。
grandkids/grandchildren: 孫
today: 今日
come to our house: 我が家に来る
by train: 電車で
on their own/by themselves: 彼ら自身で
for the first time: 初めて
ご質問ありがとうございました。