improbability

n.

不大可能的事物，未必有的事；

复数：improbabilities

1. The state of being unlikely or improbable; improbability.
   不可能不大可能或不可能的状态; 不可能性
2. Don't worry about such improbabilities as floods and earthquakes.
   像洪水、 地震这类不大可能发生的事，就不要担心了。

Improbability filtering for rejecting false positives
The Improbability of Animal Phyla with Few Species
The biological improbability of a clone
Improbability of measuring electron structure functions
The improbability of prebiotic nucleic acid synthesis
IMPROBABILITY OF COLLISIONS IN NEWTONIAN GRAVITATIONAL SYSTEMS
Apoptosis in Alzheimer disease: a mathematical improbability
The evolutionary improbability of ‘generalism’ in nature, with special reference to insects
Business as a development agent: evidence of possibility and improbability
Improbability of effective vaccination against human immunodeficiency virus because of its intracellular transmission and rectal por...