◎ instep是什么意思 n. 脚背, 背部, 脚背形的东西[医] 足背, 足弓 n. the arch of the footn. the part of a shoe or stocking that covers the arch of the foot instep的用法和例句: 1. It had a lace on the instep, it always broke. 脚背上本来设计了一根缎带 总是断掉...