emptiness

n.

空虚；空腹；无知；无能

1. I feel I am in emptiness.
   我觉得我很空虚。
2. It is a world of emptiness.
   那是一个空虚的世界。
3. Man had overcome the emptiness of this land.
   人已经驱走了这片土地的空旷。
4. He stared out at the vast emptiness that was the sea.
   他放眼向辽阔无际的海洋望去。

Emptiness of Multi-pushdown Automata Is 2ETIME-Complete
Emptiness of Ordered Multi-Pushdown Automata is 2ETIME-Complete
On-the-fly emptiness checks for generalized büchi automata
Emptiness Formation Probability for the One-Dimensional Isotropic XY Model
Checking Timed Büchi Automata Emptiness Efficiently
The Emptiness of the Lexicon: Reflections on James Pustejovsky's The Generative Lexicon
Weak Alternating Automata and Tree Automata Emptiness
An implementation of three algorithms for timing verification based on automata emptiness
An implementation of three algorithms for timing verification based on automata emptiness
A simulation modelling approach to evaluating length of stay, occupancy, emptiness and bed blocking in a hospital geriatric departme...