Definition: to notice something that is not easy to notice Level: C2
他们几乎察觉不到远处微弱的光。
They could barely ___perceive a faint light in the distance.
我以为我能透过窗帘察觉到一丝微弱的光。
I thought I could ___perceive a faint light through the curtains.
只有经过训练的耳朵才能察觉到这两段录音之间的细微差别。
Only a trained ear could ___perceive the subtle difference in the two recordings.
