sensory limen 感官阈限
psychological limen 心理阈限
limen of perception 感知阈限
A: What is the limen of this sensory input?
A：这个感官输入的阈限是多少？
B: It is too low to be detected by the human eye.
B：它太低了，人类眼睛无法察觉。
1) 心理学/生理学：感官感知刺激的临界点。
2) 哲学/文学：状态转换的边界或门槛。
3) 通用：某种过程开始的起点或过渡阶段。
1. 阈限；界限；门槛
noun
1. A threshold; the boundary or point at which a stimulus is perceived or a state changes.
Synonym: threshold, boundary, edge