名詞 run-up:

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

動詞 run-up:

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

1. Pole vaulters need long run-ups.
   撐竿跳需要長距離助跑。