indiscernible

• adj. 难识别的；看不见的

in-,不，非，discernible,可分辨的。

indiscernible (adj.)

1630s, from in- (1) "not, opposite of" + discernible. Related: Indiscernibly; indiscernibility.

1. The transition was almost indiscernible.

那转变几乎不能察觉.

来自《简明英汉词典》