1、The smudginess of the photograph made it difficult to identify the people in it.

照片的模糊使得很难辨认出其中的人物。

2、The artist intentionally created a sense of smudginess in the painting, giving it a dreamlike quality.

艺术家刻意在画作中营造了一种模糊感，赋予了它梦幻般的质感。