1. 合计为;高达：run short of...短缺(某物) | run up to...合计为;高达 | run a risk冒险
2. 跑到：run up against 偶遇 | run up to 跑到 | run up 向上跑
3. 跑到,(物价)高涨到：run through 跑着穿过,贯穿,浏览 | run up to 跑到,(物价)高涨到---- | see off 给-----送行
4. 跑到......;把......积累到：run up against意外地碰到困难、遇到某人 | run up to跑到......;把......积累到...... | secure...against掩护、保护......以便
2. run up to的解释