ambiguous
adj
1 having more than one possible meaning 有不止一种意思的; 有歧义的
`Look at those pretty little girls' dresses' is ambiguous, because it is not clear whether the girls or the dresses are `pretty'. '看看那些漂亮的小女孩儿的连衣裙'这句话有歧义, 因为不清楚是'小女孩儿'还是'连衣裙'是'漂亮的'.
2 uncertain in meaning or intention 意向不明的; 暧昧的
an ambiguous smile, glance, gesture, etc 用意含糊的微笑, 一瞥, 手势等.
Despite the fact that the bottle is tinted a delicate shade of green, an observant visitor would soon notice that it is filled with what looks like a thick, grayish substance.