0 to get an organization or business to remove your name from its mailing list so that you no longer receive email or post from them, or to remove someone's name from such a list -- 取消订阅(以不再收到相应的电子邮件或信息);注销(某人的订阅者身分)
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路,一步步也能走完,再短的路,不迈开双脚也无法到达。