英语语法分析

Advances in the studies of Gramicidin s are reviewed.

对短杆菌肽s的研究进展进行了综述。

The subject of their research was Gramicidin s, an antibiotic which had been isolated in the Soviet Union.

她们研究的科目是短杆菌肽s，这是一种抗菌素。当时，苏联已经成功地离析了这种抗菌素。