美[ˌɪndɪˈsɜ:rnəbl] 1 . The transition was almost indiscernible .
那转变几乎不能察觉.
来自《简明英汉词典》
1.difficult or impossible to perceive or discern;
an indiscernible increase in temperature
2.barely able to be perceived;
the transition was almost indiscernible
