What remained was rationed, and a single injection cost at least $40 (about $600 in today's prices).

剩下的都是定量配给，注射一支青霉素至少要40美元（约为现在的600美元）。

Scientists in the US have designed a new technology that they could see every child who'd vaccine delivered in a single injection.

美国多名科学家设计了一种新技术，通过这种技术可以在单次注射中完成儿童的疫苗接种。

He was able to join a trial of a new medical therapy and, with just a single injection, was apparently cured.

他参加了一项新医疗疗法的试验，而且只需注射一次， 病就痊愈了。

Under the FDA approval, babies - including small infants - can receive a single injection to protect against their first season of RSV, which usually lasts about five months.

根据美国食品药品监督管理局的批文，婴儿——包括小婴儿——可以注射一剂，以预防他们在第一个呼吸道合胞病毒季节感染病毒，通常有效期大约五个月。

When preparing a single injection for a patient who takes regular and neutral protein Hagedorn insulin, the nurse should draw the regular insulin into the syringe first so that it does not contaminate the regular insulin.

当为服用常规和低精蛋白锌胰岛素（NPH）的患者准备单次注射时，护士应首先将常规胰岛素吸入注射器，以免污染常规胰岛素。