adj.无法分辨的，无法区分的，不清楚的，无法识别的

The twins are indistinguishable from each other; it's impossible to tell them apart.
这对双胞胎长得一模一样，根本无法分辨。
The quantum particles are indistinguishable, meaning they share the same properties even when separated.
量子粒子是不可区分的，即使分开，它们也具有相同的特性。
The identical uniforms made the soldiers indistinguishable in the crowd.
相同的军装使士兵们在人群中难以分辨。
The twins' voices are so similar that they're almost indistinguishable on the phone.
这对双胞胎的声音非常相近，电话里几乎分不清谁是谁。
The identical twin sisters have such similar appearances that people often find it hard to tell them apart.
同卵双胞胎姐妹长得如此相像，人们常常难以分辨。
The identical molecules in the two samples were indistinguishable under the microscope.
在显微镜下，两个样本中的相同分子无法区分开来。
In cryptography, two messages encrypted with the same key are indistinguishable from random noise.
在密码学中，用同一密钥加密的两个消息看起来就像随机噪声一样无法区分。
The impersonator's performance was so convincing that the audience found it difficult to distinguish between him and the real artist.
模仿者的表演如此逼真，观众很难分辨出他和真正的艺术家。
The identical copies of the ancient manuscript were indiscernible to the naked eye.
古代手稿的复制品肉眼几乎无法区分。
The advanced technology has rendered the counterfeit coins indistinguishable from the genuine ones.
高科技使得假币与真币几乎无法区分。