如果您想修改定单，必须先取消定单，并在成功取消后重新下单。

If you want to amend the order, you must cancel the order first and place a new order after the previous one is successfully cancelled.

youdao

如果您想修改定单，必须先取消定单，并在成功取消后重新下单。

If you want to amend the order, you must cancel the order first and place a new order after the previous one is successfully cancelled.

youdao