0 to succeed in talking to someone on the phone -- 用电话联系上;打通电话
I tried to call her but couldn't get through. 我试图给她打电话,但就是打不通。
I got through to the wrong department. 我把电话错打到另外一个部门去了。
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。