Enforcing the new restrictions took on aspects of a military campaign as Ms. Sun ordered medical workers to mobilize into round-the-clock shifts to visit each home in Wuhan, check the temperature of all residents and interview close contacts of any infected patients. 

摘自纽约时报。as前看不懂， as后面我能看懂，但是我觉得as引导从句，前面又没有主句。