Millions of fertilized eggs are used as a culture to grow influenza viruses, which are then harvested, purified and packaged into vials.
几百万只受精的鸡蛋会被用作流感病毒的培养基，然后病毒会被收集、提纯并装进药瓶。
Vaccine filling and release: the batch of vaccine is diluted to give the desired concentration of antigen, and put into vials or syringes, and labeled. A number of these are then tested.
疫苗灌装和发放：将每批疫苗稀释以得到所需的抗原浓度，然后装瓶或灌入注射器，并加贴标签。
The environmental cost of replacing all multi-dose vials with single-dose vials must be taken into consideration.
必须将以单剂瓶取代所有多剂量瓶的环境成本考虑在内。
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