名詞 run up:

1. a substantial increase over a relatively short period of time
   同義詞：runup, run-up
2. the approach run during which an athlete gathers speed
   同義詞：run-up

動詞 run up:

1. pile up (debts or scores)
2. raise
   同義詞：hoist
3. fasten by sewing; do needlework
   同義詞：sew, sew together, stitch
4. accumulate as a debt
   同義詞：chalk up
5. make by sewing together quickly

1. Your heart beat will quicken when you run up the stairs.
   跑上樓梯時，心跳會加速。
2. The hotel bill might run up to￡500.
   旅館賬單也許高達500英鎊。