adj.蹣跚的;阻礙的
動詞stumble的現(xiàn)在分詞.
It's a good plan, but the opposition of the local people may be a stumbling block. 這是一個好計劃,不過當?shù)厝说姆磳赡艹蔀橐淮笳系K。
n.障礙;阻礙; 絆腳石