Every time you reach the end of the current row, you set the previous row to the current row, and start from the beginning of the row again.

每次你到达当前行，设置一行到当前行，并开始从一开始的行了。

youdao

Every time you reach the end of the current row, you set the previous row to the current row, and start from the beginning of the row again.

每次你到达当前行，设置一行到当前行，并开始从一开始的行了。

youdao