unobservable
例子
The faint signals from deep space were unobservable without advanced equipment.
来自深空的微弱信号没有先进设备是无法观测到的。
The subtle changes in the climate are often unobservable in the short term but significant over decades.
气候的微妙变化在短期内往往是无法观察到的，但在几十年内是显著的。
词汇树
unobservable
observable
observe
