adj.不能区别的；不易觉察的；难以理解的
Its colour makes the moth indistinguishable from the branch it rests on. 这蛾子停在树枝上，其颜色和树枝几不可辨。
The synthetic material is indistinguishable from real silk, but much cheaper. 这种合成衣料与真丝难以区别,但便宜得多。
It's a sound that was indistinguishable to the human ear. 这是一种人类耳朵不易觉察的声音。
