0 a key that starts a particular computer program or causes a series of actions to be performed automatically, sometimes when used in combination with another key -- 熱鍵(電腦操作中,啟動某一程式或引起一系列自動運行動作的鍵,有時與其他鍵合用);快速鍵
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。