It is not sprEad Easily, but thE virus can survivE for long pEriods outsidE thE body (E. g., in bEdding).
天花不易传播，但是病毒可长期存活于体外(如床上)。
2
As Ba star systems are evolved from G-K star systems, the distribution of orbital eccentricities and periods of Ba stars can show the final orbital character of binaries.
These algorithms are used during silence periods of speech to reduce ratio of transmission and improve ratio of use in signal channel. It's a best silence compression scheme for G. 729.