roll up

英 [ˈrəʊl ʌp]

美 [ˈroʊl ʌp]

卷; 绕; 使成筒状（或球状）; 卷起（袖子或裤腿）; 到达; （尤指）涌向，涌到

柯林斯词典

See also:The jacket was too big for him so he rolled up the cuffs...Walking in the surf, she had to roll her pants up to her knees.rolled-up
PHRASAL VERB 到达;（尤指）涌向，涌到
If peopleroll upsomewhere, they arrive there, especially in large numbers, to see something interesting.
1. Roll up, roll up, come and join The Greatest Show on Earth...
  快来呀，快来呀，来一起看“地球上最精彩的演出”。
2. The first reporters rolled up to the laboratory within minutes.
  第一批记者在几分钟之内就涌到了实验室。
See also:roll 6 rolled-up