heterologous vaccine的用法和樣例：
例句
- The ideal technology would be a vaccine that gives lifetime immunity with a single dose.
最理想的技術是發明一種疫苗，只要注射一次，就可終生免疫。 - The company is also working with a vaccine that trains cancer patients' immune systems to attack cells that produce telomerase.
該公司還在研發一種疫苗，這種疫苗訓練患者的免疫系統去攻擊產生端粒酶的細胞。
