an up是run up的过去时
run up
升起
They ran up a flag in honor of the president's visit.
为了欢迎总统的来访,他们升起了一面旗子.
(使)增长
His debts ran up alarmingly.
他的债务惊人地增长.
迅速地登上; 沿…迅速地移动
A sudden pain ran up her leg.
一阵突然的疼痛顺着她的腿蔓延开来.
an up是run up的过去时
run up
升起
They ran up a flag in honor of the president's visit.
为了欢迎总统的来访,他们升起了一面旗子.
(使)增长
His debts ran up alarmingly.
他的债务惊人地增长.
迅速地登上; 沿…迅速地移动
A sudden pain ran up her leg.
一阵突然的疼痛顺着她的腿蔓延开来.