免疫学是生物科学的一个分支。

Immunology is a ___branch of biological science.

事实上，科学的每一个分支都频繁地发生创新。

As a matter of fact, innovations have taken place quite frequently in every ___branch of science.

计算机科学是技术中一个快速发展的分支。

Computer science is a rapidly evolving ___branch of technology.