perceptible

adj. /pərˈseptəbl/ C2

可觉察的；看得出的

Large or clear enough to be noticed.

仙境例句

There was hardly a perceptible sound in the wood, only the soft bubbling of the hookah.

林子里几乎听不到什么声音，只有水烟袋轻轻的咕嘟声。