MD: It is hard to single out one piece of the whole as being "hardest."

MD：很难将整体中的一部分挑出来作为“最困难的。”

youdao

MD: It is hard to single out one piece of the whole as being "hardest."

MD：很难将整体中的一部分挑出来作为“最困难的。”

youdao