perceptible

a. 可察觉的, 能感觉得到的, 看得见的

副词:perceptibly 名词:perceptibility 

per.cep.ti.ble

adj.（形容词）
Capable of being perceived by the senses or the mind:
可感知的：能被感官或感觉所感知的：
例句：
perceptible sounds in the night.
在夜里总能感觉到声响


来源：
Late Latin perceptibilis
后期拉丁语 perceptibilis
from Latin perceptus [past participle of] percipere [to perceive] * see perceive
源自 拉丁语 perceptus [] percipere的过去分词 [感知] *参见 perceive

【引伸】
percep.tibil.ity
n.（名词）
percep.tibly
adv.（副词）
<参考词汇><同义词>perceptible,palpable,appreciable,noticeable,discernibleThese adjectives apply to what is capable of being apprehended with the mind or through the senses as being real.
这些形容词适用于用意识或通过感官可被察觉到为真实存在的东西。
Perceptible is the least specific:
Perceptible 是最不具体的：
例句：
After quite a perceptible pause, during which he consulted his notes, the lecturer continued.
演讲人在很长的一段可感知的停顿后，他核对了自己的笔记，然后继续。

Palpable applies both to what is perceptible by means of the sense of touchand to what is readily perceived by the mind:
Palpable 既可用以表示通过触觉感受到的事物，也可表示已通过意识感知到的事物：
例句：
.I felt as if my soul were grappling with a palpable enemy. (Mary Wollstonecraft Shelley).
.我觉得似乎自己的灵魂在与一个明显的敌人格斗. （玛丽·沃斯通克拉夫特·谢利）。

例句：
.The advantages Mr. Falkland possessed . . . are palpable. (William Godwin).What isappreciable is capable of being estimated or measured:
.福克兰德先生所具有的优势…是显而易见的. （威廉·戈德温）。Appreciable 形容可被推测或估算的事物：

例句：
Appreciable amounts of noxious waste are still being dumped into the harbor.
可以估算的大量有害废物仍被倾倒入海港。

Noticeable means easily observed:
Noticeable 意为很容易被观察到的：
例句：
noticeable shadows under her eyes;
她眼睛下明显的阴影；

例句：
a noticeable tremor in his voice.
他的声音明显地颤抖。

Discernible means distinguishable,especially by the faculty of vision or the intellect:
Discernible 意为可区别或可辨别的，尤其是通过视觉或理智：
例句：
The skyline is easily discernible even at a distance of several miles.
甚至在几英里之外都可清晰地辨别出地平线。

例句：
The newspaper reports no discernible progress in the negotiations.
报纸报道谈判没有明显的进展