求翻译：他们的儿子由妻子的父母照料。但在2000年，二个老人生病，不能再照料孙子。因此我不得不于 2001年1月回中国照料孙子，接着我妻于2001年10月回中国二人一起照料孙子。是什么意思？

Their son from the care of his wife's parents. But in 2000, two elderly sick, can no longer take care of grandchildren. So I had to return to China in January 2001, care of grandchildren, and then my wife back in China in October 2001 with the care of two grandchildren.

正在翻译，请等待...

Their son by wife's parental care.But in 2000, two old people fell ill, could not again look after the grandson.Therefore I could not but return to China in January, 2001 the care grandson, then my wife returned to China in October, 2001 two people to look after the grandson together.

Parents care for their son by his wife. But in 2000, two elderly sick, no longer able to care for grandchildren. So I had to return to China on January 2001 to look after his grandson, then care with my wife in October 2001, back to China two grandsons.

Parents care for their son by his wife. But in 2000, two elderly sick, no longer able to care for grandchildren. So I had to return to China on January 2001 to look after his grandson, then care with my wife in October 2001, back to China two grandsons.